Tutorial: Legally Get Your Stolen Art RemovedMore Like This
Here's a quick tutorial for anyone who might find their artworks on a website without their authorized permission. This is the method that you legally go about having copyright infringement dealt with, so your request (if submitted to a host located in the US or other countries that respect copyright laws) will not go ignored. You do not need a lawyer to file a DMCA takedown notice, you only need to be the copyright holder of the work. If you created the work, it's copyrighted to you.
You will usually not get much of a response if you try to submit an informal copyright notice through Support requests on a website. This method is what's outlined in Section 512(c) of the Digital Millenium Copyright Act, and what service providers will respond to.
STEP 1: See if the website has a copyright section in the Terms