I've searched rules, guide, and forums. I can not find anywhere the proper procedure for submitting custom images, the image size and file size restraints, or anything else useful concerning custom images.
“They're all right there on the CP redemption page.I'd have never thought to look there. Since I didnt know CP could be used for "painiting" my stuff, I've not bothered to earn CPs, or even to find out what they're for. If this information was put in a section about images and made easily accessible to the day-one-player, more people would do more clicking more often