I too thought it was a little dark, and couldn't resist the invitation to upload a mod. (using Paintshop pro). Apart from 1.4 degrees of rotation, I added a little lightening to the shadows, and dialled in a little extra saturation (too much, it turns out after uploading).
Basically, your version is a good shot, The thumbnail prompted me to look at it, for a start ! And it does what you intende very well --- i.e. emphasise the height of the chimney.
Now you have two different treatments to consider. Have fun !