Faceless Hats and Fustrating Valve Software

First item up, Its a hat for Faceless Void.
Currently a Work in progress. This is a Hi-Res model I have sculpted, and currently I'm Bringing it down to 500-300 poly range.

Main issue I'm dealing with is converting it into a proper Valve format. Once I get that done I'm posting it into the Steam workshop for Dota 2.