Well when youre on the page where you add/edit a MOC, you click 'add pictures'. Then, at the top there's a button that says: 'Main photo' in a box thats in red. Then u click browse and take the pic from your folder on the computer. That should do it. If u have more questions, u can ask me on one of my MOCS.
nice diorama of a clone invasion. I have to say I like your custom red jet trooper the most. He's cool. Now for something a little off topic. Yes I have seen pizzamovies work on you tube, but All of those clones on kashyyyk are my own, by the way thanks for the comments, keep building, ~CTF