Ah wow, I have to admit that this is indeed quite a nice picture. Your colors are pretty nicely done here! I especially like the highlights in her hair, in the leaves, even in the background really. Your shading's done really nicely done there, and overall I get a nice, happy, vibrant tone from this work.

Hm, if I could remark on a bit of critique though, it'd actually be on your background. I see there is a branch that comes from the bottom left and then curves up right. It's colors are quite similar to the area below it though, and the boundaries threw me a bit off at first. But, in total, that's really all that I can find directly confusing or off to me with this work of yours. I believe you did a pretty nice job overall!