Check out the concept art for Disney's "Princess Academy":

http://moviepilot.com/posts/2015/05.....anual%2Cmanual

There's a very nice sketch with Maid Marian and Vixey, and if you look closely you'll see Marian in a few other pieces by David Kawena. In fact, he managed to include nearly every female lead from Disney animation history.

Sadly, this short was never developed, but at least some dynamite concept art was created.