Here are some skins I've made for a few Quake 3 models. Click the titles or images to go to their respective review at Polycount, where you can download the skins.
Team Colors Skin Pack - Seven extra team skins for each of the twenty-three Quake 3 characters - 161 skins total) No pictures of these, since they look just like the ones from id Software, but with seven new colors.
Dp X-51 - A robotic skin for Visor
Battle - A battle-scarred skin for Anarki