another question a bit offtopic (or may be not) regarding use of external materials into derivative poserwork. Suppose i want to make some work that need to include/use a design, peice of art, etc, that is copyrigthed and owned by someoen else. More precise example: i want to make a serie of cloth textures featuring/advertising known games, or characters or rockbands... What will happen ? If i make either non commercial render or item with that on one hand, or making commercial renders and items on the other hand (i guess second situation is clear and obvious: i can't) Is the first situation related to the fair use, or is tolerated or something ? or do i need to bother owners of initial arts and brandmarks in mail they won't even read, not even talking about replying ? And also, do i need to ask the original artist or the enterprise which owns the rights of this artist's work ? I tell that cause i saw metal rock band tshirts in freebies long ago. Also about some kind of things, is Santa Claus copyrigthed/owned by someone ? (i guess so, and if it is not, sure someone is trying to make it his own already)