I don’t usually upload this stuff on here, but it’s something everyone should be reminded of.

If you do not own the image (either created it, or had the image created for you) it is not yours to upload!

Just because you don’t claim it as yours does not mean it makes taking someone else’s work and uploading it without their permission is okay.
Just because you linked to the original, doesn’t automatically make it okay.

You’re not getting that person more exposure, you’re taking control of their art away from them.