Hello, there^^
I'm not sure if your aware of this or not, but dA is a site for posting artwork in which you yourself did. Pictures you find on the internet are for accounts on sites like Photobucket, but not here on dA. What you put on dA is like your art portfolio, therefore, it should be comprised of things you do 100%.
You may ask why I'm telling you this? Well, a few weeks ago here on dA, the original artist caught sight of their work on someone's page here at deviantArt. They immediately requested that the stolen work be removed. If the deviant refused, they could have had serious legal issues filed against them, such as being sued $250,000 or more. Being a published author, I know a lot about the copyright laws, and they are very strict.
Other consequences include having the deviations forcefully removed, your being banned, or eventually, you not being allowed back on this site.
I would appreciate if you could please remove the artwork that is posted on your page, so that nothing serious happens to you. People have been fined and sued for posting work that isn't theirs on their site, and dA has a way of tracking down who owns each page here. So, please, remove all the art, so that you can have a safe and enjoyable time here on dA.