When I was young, I traced a picture of Espeon and added poorly drawn wings... but I did have something in my mind I wanted to draw. I just did not have the skill level to really attempt to draw it.

Now I can draw it and more. Since Mega-Evolutions exist now, I thought it'd be prime reason for Espeon to even have wings and even better I could design it more to fit a mega-evolution for it. It'd be a Psychic/Flying type.