This is a quick drawing I made for my mother's birthday. I did it entirely in pencil, first sketching it and then darkening lines. I did it freehand, with various vectors as references.
The Derpy vector came from the Castle Creator game.
The Dinky vector came from
The Doctor Whooves vector came from
, and I used
's vector for the tie.
I do not own the characters in this image. Derpy, Dinky, Doctor Whooves, and My Little Pony: Friendship is Magic belong to Hasbro and Lauren Faust.