The costume, the makeup and keyblade have a nice air of quality to them. There's nothing more off-putting than a badly designed outfit, so top marks ma'am! In addition, the hair is wonderful, I usually have no trouble distinguishing between dyed hair and wigs, but you've got me stumped; bravo!
The model is a dream! She has the prefect physic to portray the character and an excellent facial expression - it's subtle enough not to steal away from the other aspects of the photograph, but enough to still attract focus.
Speaking of focus, I feel it's been done well here. The only niggling critique I could offer is that the foreground of the picture seem to fade from sharp to soft more abruptly than I'd like. Although, it's nothing Photoshop could fix within a few minutes, so I'll overlook it.
Unfortunately, I do have to deduct some points for originality. If only because the seaside background and character have been done before (quite I few times) and although you've done it right (it really is terrific) I still can't give it that 100%.
I really do like this piece - excellent work, keep it up