I hope you don't mind me using your artwork as my desktop background!!!
Very nicely done My only suggestion would be to take another look at the color/lighting for the tree, it almost seems as if the lighting is coming from our view of the tree, but then when you look at the sky it looks like the light should be coming from behind the tree, so it's a little disconcerting seeing the tree lit up when you expect it more in shadow/as a silhouette. This may just be a personal take on this though. However, either way nicely done, I enjoy it very much!
I know something about this was bothering me. Thanks for pointing it out. I'll certainly try to adjust it.
This is Great!
Yay Summer! Pretty!