This was the original sketch I did during class one day. I was working out Derpy's dress and the opposite singing her.
I came up with this idea of the Master making this creature that could prey on the Doctor well when his emotions are running high--like during his wedding. She's specially designed to devour his hearts to keep him from regenerating.
... 'course, no one told her that she wouldn't be the one keeping the power.
To hear my craptastic Derpy-fied version of This Day Aria go here ----> [link]
Art (C) *AugustRaes