How fun! I enjoy the childlike sense of wonder you bring to your pictures. The colors are straightforward but convey the youthful energy well.
This is also the first full-body shot I've seen you draw! Good work. Drawing a whole person is extremely difficult, but it's good practice to do it as often as you can if you want to improve. I know I like to avoid full-body shots, and a friend of mine likes to have their characters keep hands in pockets so they don't have to draw fingers. But you never get better if you never try, right?

I do have one small criticism, though. The 3D effect makes the grass look quite far away...are we supposed to be looking down on her like she's falling from the tree, or is the supposed to be standing on the grass, leaning back and about to flop her body down? If it's the latter, you might try bringing the background in on a closer layer or shrink the 'distance' between layers with the 3D slider when you go to submit. Just my two cents!