Misty MMD model to Garry's Mod

There doesn’t seem to be any models in the workshop for Misty (Pokemon), but I found a pretty nice one by darkliger01 on Deviantart. My problem is that it’s for MMD, not Garry’s mod. And I have no clue what I’m doing when it comes to converting models to GMod.•

The model is here: http://darkliger01.deviantart.com/art/MMD-Project-Poke-05-Misty-2-1-DL-324590458

If anyone is willing to lend a hand, I’d be extremely grateful.