Sometimes there's just that one thing that keeps you from fapping to a picture. Now, let's say you have the ability to fix that. The question is, do you post said edit for the benefit of all? Or do you keep it to yourself to avoid drama?
I think it's ok to post an edit provided that:
1. The edit is of good quality and respects the style of the original (you can't tell it's edited)
2. The tags are updated and the post is linked to the original as a child post.
3. There's a good enough reason for the edit (to reduce spam)
I also personally leave my name out of the tags so the credit remains with the original artist.
For an example see post #63362
Of course one answer is to get the original artist's permission first, but that's not always practical. :3
Updated by fartpaw firekidney