I really like the softness and dream-like feel of this piece, I can feel the innocent candid soul of its character. Great idea!
Try not to lose her features with the coloring, she looked very ethereal and stylish with the uncolored white skin at the beginning.
I know the skin color addition is more realistic, but it also makes it less personal.
You may also keep in mind the limits of the tools you're working with, those colored pencils are useful but not the best for detailed works!
Hope this helps, can't wait to see more
