Thread:Hathomirr/@comment-31617425-20170413083039/@comment-3193686-20170419160831

Essentially, anything that's not its original size or of poor quality. The sprites are actually a lot smaller than the ones you recently uploaded, which conflicts with the rest of the images in that pool. It's a matter of consistency as well.

The only other thing I would mention would be that when uploading in game screenshots, make sure that the interface is not shown in it (check out the SS level articles for some examples).