No, it really only covers code… But no license means all rights stay with the owner amyway. To be secure in case of a court trial, you'd have to go to a… (Notar in german) and put a copy of the artwork there.
This license will allow users to re-use and re-distribute your artists' work, but they may not alter it, use it for commercial purposes, or without attributing the work to the author in whichever way was specified.
Superb. Thanks guys.