Wow, guys! So much excellent critique in this topic! I've gotten opinions on the clouds saying they're fine as are and need to be detailed, and I've had opinions saying to take them a whole different direction!
I really like Tuna's idea for the clouds as an alternate; that would probably center the design more on the tree, I suppose.
Jad, your idea of a reflection of blue light upon the leaves is also a good idea to try; I implemented it a tad at the bottom of the tree, but I'm assuming you'd like me to carry that out further?
RGD, there's actually a really small squirrel on the side of the tree, it's just not noticable thanks to the statue. I'll probably end up moving him somewhere else!

Dusty, I'll see if I can properly fix the balance issue- thanks!
Manupix, great ideas! Wilder colors, you say? That might work; it'd be interesting if some of you would try some of your color combinations on it. I'd love to see what you all would think as "wild, yet unified colors," and what colors would fit.
Tom, thanks, man!

Sure thing!
snakesqzns, thanks for all the critique! It's very useful. The roots are actually supposed to be a mirror of another tree, though!
Tuna - thanks for both posts, they're very helpful. I'll try and render the focal point better, in any case!

I'm still looking for opinions on the clouds; edits, examples, ideas, anything that you'd like to discuss! Thanks so far, everyone! I'll hopefully get around to fixing these things this weekend.