I've seen a lot of people saying that the things in your gallery aren't, in fact, your original works. You shoul listen to them, and remove them. If you didn't take the photograph yourself, it doesn't belong in your gallery. Nor does a drawing that you didn't draw.
I'm not trying to be mean, it just seems like you have the wrong idea, and I'd hate to see you banned from dA because of a missunderstanding.