how do you change of main pic of one character?

i mean , if i wanted  to change the main picture of batman,  how do i do that??

Otherwise, there's a request thread in the Editing  & Tool forum that allows users to submit request for admins (or those with a lot of points) to change the picture. 
 
However, there needs to be a good reason to change the picture. Some users change pictures as a way of gaming the system to get points rather than actually making it a better picture, that's why it requires 5,000 points.

You ask HERE.