An interesting image with a nice bit of colour popping!

Unfortunately, from my point of view, the post is very distracting, and divides the image, and, composition wise, the telephone box is too central
So, if you want to mess about a little bit more with the software, I suggest you:
a) Clone out the post
b) Crop off the lh side, nearly up to the bush
c) Increase overall brightness slightly
and compare the difference!

A lovely coastal shot
My only comment is that the colours lack punch and the horizon is very slightly off level
I've posted a mod. which addresses these problems, by levelling it and adjusting the Saturation / Light control levels. Hope you approve of / like it!

A great uplifting scene, when we are in our mid-winter freeze! The treatment makes it look like a watercolour painting!
Whilst the sky and clouds are very nice, I would crop off the top 25% of the image (to just above the central fluffy cloud), to increase the emphasis on the wonderful landscape

A nice winter's scene
The snow is a little underexposed and also has a slight blue cast
I suggest Selecting the snow (using Lasso) and using Saturation control to get rid of the blue (ie select Blue Channel in Saturation box and desaturate using the slider). Then increase the Brightness in the Light Control That should do the trick!

A very nice moody scene, incorporating a figure to add scale

I feel the main point to address is the large burnt out seagull in the foreground which draws the eye and is thus distracting
The second point, which can be seen around the top of the trees, is that the image is very slightly oversharpened, which goes against the soft feeling you'd expect with mist.
I have posted a mod. with the seagull cloned out, and which has had a very slight bit of Gaussian Blur added
I also trimmed a slight bit off the bright blue sky at the top, to increase the emphasis on the misty bottom
Hope you approve / like

Well done on getting the blurring water effect that you wanted! It looks great! It gets my vote!
Now to improve it! I hope you find the following constructive:-
Firstly the horizon needs levelling (about 2 degrees to the left!)
Secondly, the colours are a bit flat and needs lifting (Saturation and Lighting)
Thirdly, there is too much sky! If you crop some off it will put greater emphasis on the water
Then finish off with a narrow black frame
I have done all this, and posted a mod for you to see. Hope you approve of / like it

Have added a mod
Unsightly bright white sunshade bases removed (they drew the eye in the original!)
Slightly brightened image
Added black border
Hope you like / approve!

Although it's a great shot of the butterfly, the vivid flower dominates the image. But it's a very nice overall image.
I think it would be slightly better if some of the featureless green bottom was cropped off (1/2 way up to the flower), and the intrusive stalk / branch across the top rh corner was cloned out

A great image of the butterfly, but I agree with whiteswan01, it is too close to the rh side
I think the lh side of the image is completely superfluous, and the cut off top of the branch looks unnatural
I would crop off the lf half completely (ie all of the branch) leaving just the leaves, and then clone in a bit more extra little bit of green background behind the butterfly
you get my vote for the butterfly

A great sharp image, with lovely colours

I think it would be improved even more though, if the featureless sky was cropped off (ie about 1/4 off top), thereby concentrating the eye on the more important part of the image

To catch a dragonfly in flight is brilliant! I usually wait until they settle on something

The use of the inner line/frame makes it a pictorial shot rather than a pure natural history one, so whether or not it is successful depends upon what you intend it to be! I would advise against it if you were ever to enter it into a Natural History competition though

However, as the background is so featureless I think the dragonfly cutting the line in two places actually adds interest. Without it the image would appear a bit flat / static.

My only critism is that I think the green is a bit bright and overpowering. If it were mine,I would decrease the Green Channel Saturation level a little

However it's a very competent shot and well worth the effort you put in to get it

Great shot with lovely colours

Would also look great in letter box format, by cropping off sky above rainbow and most of the grass

A great image, particularly when viewed large!

With all the positive comments above (most of which I agree with) I'm reluctant to say anything, but why not?
I think that the walkway tends to be a bit dominant (about 1/4 of the base width!) If it were mine I would crop the bottom off up to just below the white rag (or whatever it is) This would sustantially reduce the forground, and make the boats and that wonderful sky appear more dominant. It would also have the effect of repositioning the horizon away from the 1/2 way position, thus improving the composition

Fabulous snowscape image, which looks really good when viewed large!
The only thing I have to say about it is that there seems to be a blueish tint throughout (maybe due to altitude and U/V light and all that jazz!!!!). I would suggest trying to reduce the blue, by tweaking the Blue Channel Saturation Control until the snow appears white

Nice silhouette of the tree. Simple but effective!
Would have been better if the viewpoint was such that the top of the mountain could have been seen more clearly
A top and bottom crop might improve the composition, making the tree more dominant (see mod)

Great capture and composition, but as jcorn3 has already mentioned the teasel is sharp and in focus, whereas the bird appears softer and slightly out of focus. The bird's colours are also a little washed out
I think you might improve it if you increase the Blue and Yellow channel saturations a little, which will make the bird stand out a bit better!

I still think it's a great shot though!

It's a nice shot, but unfortunately the bird is underexposed! Most probably this is because you are shooting into bright which is behind the bird, and the camera is exposing for that light.
If you have "spot metering" on your camera use that with the spot focused on the bird, when taking this kind of shot in future. Alternatively,if you know how, set the camera to compensate for the bright backgrond
In the meantime you could tweak the Saturation and Brightness/Contrast controls to liven it up a bit

Lovely colour and detail

I'm not quite sure about the out-of-focus stem going all the way down though! It tends to drag the eyes downwards. I would clone the o-o-f bit out, to bring attention back onto the flower

The colours are nicely captured
I'd crop off half of the dark featureless sky, and a bit of the foreground 9which does not really add much to the image). This would leave you with a letterbox fformat with much more emphasis on the interesting coloured lights section

A well seen image
The group are obviously the centre of attention as everyone around them are looking at them, and the selective colour popping has made them the focal point of what is a very busy scene.
The contrasty Black and white well suits the rest of the image, showing up the wet cobblestones
A very atmospheric, well handled shot