User talk:MaxMagnus
Appearance
It's encouraging that as an artist, you are willing to consider Wikipedia featuring one of your works.
Please also read (Wikipedia:Donating copyrighted materials) which should assist you.
If you want to release it under a 'free' license, then all you need to do is upload an appropriate version with the same filename, fill out the {{information}} box that's generated and choose an appropriate CC-BY or CC-BY-SA license.
(Note if the original work is held by any gallery, rather than yourself, be sure to note this in the information.)
If that doesn't help please ask on the Help Desk