i think i put CC-BY-SA because CC0 means people don't have to credit you right? i'm not very good with the licensing stuff though so i might be wrong!
thank you for the recommendation for the tag :D
Yeah CC0 means public domain. CC-BY you must be credited but without copyleft, CC-BY-SA is CC-BY with copyleft
You are not bound by using existing licenses. License is a "contract" between you and user.
In general you can write something like this:
License:
- You can do X
- You can do Y
- You can't do Z
And it will be "considered" as license so you can use your any custom license. In general it consists of following parts
- Must user attribute the author?
- Can user modify the art to suit their needs?
- Can user redistribute the art?
- Can user use it commercially or only non-commercial use is allowed
But some creators use free cultural licenses usually from CC (Creative Commons) family