Nice one! One note of feedback, given the platforms also going through a transformation as implied by the second panel, it seems like a full body shot is missing in this one. I'd be the only one complaining though, great work.
If only it were that easy! Is it the type of thing where she changes back if she takes the necklace off? Or would she need a different one to change back if she wanted? Or maybe it's a one way street?