If I may, I suggest doing traditional drawings. Whether it be with pencil, pen, brush, vinyl or anything else, traditional artwork is always nice to look at... at least, for me it is. Also, I noticed that you don't have any traditional artwork up, so perhaps that may be another incentive. And, if you want a specific idea, just ask me, and I'll send you a note. I've had an idea in my head for quite some time, but I've never had the time to actually put it to paper. Anyway, that's only if you want to hear my idea.
And, yes, draw Pinkie Pie. Can't be complete without Pinkie Pie.