I've just started playing Final Fantasy IV (here's my gameplay blog!
) and I love the hints of a mage-to-mage mentoring relationship between Rosa and Rydia, with the gentle acknowledgement that while Rosa is more experienced, Rydia has the greater talent.
I was looking for some fanart expressing this. I found this official painting
of Edward, Rydia, and Rosa, but Rosa was depicted in Sexy Objectification mode, so it didn't work for me. I used that picture as the basis for Rydia, then tweaked Rosa's posture using this Rosa & Kain fanart
as a reference for Rosa.