The whats and why's:
-model on right side of crop, lift left arm instead of right one and maybe include the full arm; because you need to help the observer lead out and back into the image. The right quadrant is preferable.
-Cutting one arm off in a crop kinda does not work most of the time; because (unless) you have a second one to balance out composition, it looks, well, cut off..
-face 3/4, not profile; because the nose sticks out badly and ruins the cute face. Once you do that, be sure to use front fill because hat will shadow forehad even more.
-too much lighting going on; if digital, then color balance appropriately unless this is the lighting YOU were aiming for. If film, use clor correction filters.
-the left light source (fill?) needs to be more towards camera and center; because the arm is blocking it and therefore causing the shaded area by wrist and by upper breast.
-try to get her right hand or forearm a bit on her hip so that the final image does not have a flat arm all along her side.
-The bra, the hat and the necklace match perfectly.
-The model seems she could cover the range from post teen to thirty something; very flexible- that is a good thing.
-MUA with her is critical as too much will look poor immediately PLUS: do not put too much red on this ones lips- they will look pouty and "Judy Garland on an adult" like. A Lolita kinda thing...not cool.