Thought I was looking at a painting at first your right the glass does add an interesting aspect to the picture. it allows you to give extra depth of field to the flowers while keeping the background blurred.
very nice shot, your best upload so far

A nicely done shot, there is cracking view from the window which is subtle but shows the hotel has promise.
there is slight converging of the verticles which could be tweaked in PS.
although dbuller has a valid point about the ceiling it gives the room a sense of space.
One tip with interiors, if there are lamps, turn them on even in the daytime. it brightens a room and gives it a cozy warmth.

Regards
Andy

Looked to have a cyan colour cast, maybe it is just my monitor but I have uploaded a quick mod.

A nice moody expression but be careful with your perspective, by having her leg and hand towards the camera, it has given the appearance of being overly large, not very flattering especially for women.
Although red is a nice bold colour, it can be a little too bold, I think due to the black hair and predominently white surroundings, the red colour has started to dominate this shot.
However it has been quite well lit with no harsh shadows evident.

Looking at the shot it has a nice variety of shades and colours but the path spoils it for me, its a little too central and it could be used to better effect as a leading line, but it would need to lead to something of interest. use a prop, partner, child or a dog even.

reference sharpness, are you familiar with hyperfocal distance?
dont want to teach you something you already know but just in case;
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"... the hyperfocal distance setting ... is simply a fancy term that means the distance setting at any aperture that produces the greatest depth of field."

How to Use Your Camera, New York Institute of Photography, 2000.
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Now if you google this tem you will come up with all sorts of in depth complicated tables and charts, however I was taught a simpler method.

1. Compose your shot and focus your lens on infinity.

2. Look through your viewfinder (using DoF preview if you have it) and identify the sharpest part of the image.

3. refocus your lens on that point and you should be focused on the hyperfocal distance.

Hope that helps

Andy

Nice shot, i felt that the bold colours distracted the eye from the main subject hence the conversion (see mod) and I also tried to clone out the ditraction on the lower right but its tricky on a low res image.
A lower angle and further to the right would have given more of the train in shot providing a leading line.
I have a similar example here if your interested.

Be careful taking these kinds of shot, I have been kicked out of five stations and been detained under the prevention of terrorism act just for this kind of thing.

cracking shot with just one minor point, the knees showing in the bottom of the frame are too subtle. I personaly think that they should either be in the shot or not and they are just noticable enough to be distracting.

See mod.
Acidentally uploaded twice

Love this shot though.

A cracking subject which you have isolated beautifully, however,
it is smack in the midle of the frame and the top of the flower has an untidy look to it in contrast to the rest of the flower.
i dont know your exposure settings but your depth of field is falling off too early in my opinion and your highlights are almost border line.
With your lens and a little exploration, I think this subject could provide you with many nice images
Andy

I think it would have been nice to show them as a head ornament, i.e. with the rest of the head in the shot, it would have added that 'human interest' factor and still remain the main subject.
to be honest i wouldnt have realised what it was without your description.

I take it by 'natural' you mean straight out of the camera. this is very comendable, but dont forget we are photographic artists and as such we have 'artisitic license' so there is nothing wrong with a little tweaking.
if your camera has aperture priority setting, try using this with an aperture of about f4 nice and close to the leaf, this will reduce your depth of field and blur the background even more to isolate your subject.

A bit more patience with composition, its not like its a sports car that is going to race off in to the distance. a couple more minutes and the boats probably wouls have seperated allowing you to isolate your main subject, at the minute it looks a little cluttered.
obviously theres nothing you can do about the weather on what looks like quite an overcast day but what i like to to when there is a lack of colour is go B&W.
I think the main thing, like magnus pointed out is that it is smack in the middle of the frame, its travelling and it needs space in the frame to travel to otherwise it could just be moored still.

nice lighting, almost a rembrant effect. the hair nearly obscuing the eyes is a little distracting though and i'm not sure whether the white halo around the shoulders is intentional or not.
watch the fingers, try and make them tidier, womens hands photograph better from the side rather than showing the backs or palms, it makes them appear slimmer and more feminine.
a little description of what you are trying to achieve and your own opinion of the image would help people critique better.
all in all a nice shot, i like it anyway.