Skins

Do not Upload:
Skins that you did not make, or that use parts you did not make. This includes:
o Skins made by other persons
o Minecraft textures (Blocks, Steve and everything else)
o Skins/parts from sites like Skincraft, Minershoes or Novaskin
o Any other work that you did not make yourself
Recolored Skins. Don't upload multiple skins when you only recolor them. Provide alternate downloads in the description. Don't recolor a skin made by another person and upload it.
Pixel Adjustment Skins. Don't upload multiple skins when you only change a few pixels
Single-color, "flat" or random/scribble Skins
Also note that single-color skins, with just an outline and/or a few other pixels on it, still count as single-color.
Skins that have transparent parts
Nude Skins
Portrayals of offensive characters (Example: Hitler, Pedobear)

It has been done before, and it has been done better. Sorry.