http://en.wikipedia....thors%27_rights
http://emptyeasel.co...otect-your-art/
First off, the moment you create ANYTHING visual—paintings, drawings, photographs, sculptures, etc—the only person who is allowed to copy that art is you. If you decide to sell prints of one of your paintings, you can. If anyone else does, without your written permission, you have the right to take them to court and sue for damages.