i used to do these kinds of pictures a lot in highschool; drawing on black paper with bright colored pencils lighting the silhouette of a body or something. These were always fun to me, and very calming. I usually just do 1 light source but i added 3 different ones to make the image really pop.
I may do a few more of these, or even offer them up for commissions. Maybe a few of you guys would like to see your pony like this.