Model not rendering//no textures.

Hello new to Unity.

trying to make basic shirt skins for Rust. (game)

I loaded the workshop and dragged "preview" model into the scene but no textures.. just pink.

here's a snapshot of both the shirt i'm trying to modify/preview as well as the man who is missing basic skin

http://imgur.com/fesofu7

http://imgur.com/E3jbrOC

any help? I can create the shirts for upload but can't get a preview for icon//preview creation for the steam workshop.

thank you happy holidays.