http://www.worldofminecraft.com/content/starwars 

But the answer to your question is, 150 points - Contributor, 1000 points - Epic Contributor, Also you don't have to post skins to gain points, you can gain points by voting up or down, commenting, uploading textures and of coarse uploading skins, take in mind you don't get many points for uploading a skin, to be honest you get 1 point for it like every post, I only gained 112 points from uploading skins and the rest were replying, commenting and just general discussion. :)