Very nice, I think you still have enough colours for some more AA, but beside that it's still beautifull :D
Hmmm, looks absolutely nice, but... the water seems to me like sime kind of oil-ish liquid. Thw water shininess laks from it. Meaby a little transparency or something would fix it?
Nontheless, nice job!
The tree is a little allocated, but as a whole it is quite good
Not bad at all. I love how you used the two colors of light at the top.