You know, you can indicate (when you upload a model) that someone co-authored a model, so it'll appear at the top alongside yours. : )
At first I was like "what's different?". Most of all I would suggest making some more modifications to either texture or mesh; yes the bow is gone, and the shoulderpads/crown is neat, and the orb... But it's definitely hard to tell, and this restricts it's usage from those who would use it alongside the Naga Sea Witch.
That being said, I really like someone making a more "useful" Naga Sea Witch model; that giant bow really shut out any other usability for her, whereas here she's more of a generic Mage. Nice.
Finally, I love that floating Orb; so few models have "separate parts" like that, and it's super-cool.
Few more changes, mayhaps?