Impressive! Nice, fluid pose and good proportions! I like the shiny-ness of her dress and hair. =) The details in her dress are well done as well. I especially like the butterfly clasp!

The only thing I think that needs improvement is the tree. While I think you did a great job on the wood part, the leaf brush is a little overused. =P In the future, you might want to experiment and try to draw the leaves in. I think it would it make the picture even better!

Great job all around! ^_^

This is really wonderful. I've never used any version of Photoshop, but you've done a great job from what I can see. I love your use of colors... bright and vivid. Her hands seem a little too big for such a dainty creature, but you probably couldn't have picked a better pose for her. :) Great job!