My inspiration for this design is the "Tiger Millionaire" episode where Steven explains that Purple Puma, aka Amethyst, just wants to be wild and free. I wanted to go with a really cool puma but I couldn't figure out how to make it work and I thought that wings represented freedom well. So then I thought about how she was an owl in the episode "Story for Steven" and thus this design came about.
I hope you like it. :D