If you really want to get legally savvy about things, Fair Use works for Educational Purposes.

If I were to give a recommendation for the conditions of doing a study of another artist in OCA -- I would go with a combination of Educational Commentary, Attribution to Source Material, and Transparency.

That way nobody thinks I'm Frank Frazetta or Gil Elvegren etc.

Otherwise, I think I'm cool just to post in OCD, cause I tagged acidyo on a post a little while ago when I was studying cowboy bebop, and that went fine, with no comment.

I'm going to keep doing studies, so @midlet maybe you can let me know if that study rule can be modified.