I have been working on a cover for the user Pinkamina_daine_pie for his story Memoirs of the Mindless.  It's a story involving Pinkie Pie encountering Twilight as she descends into madness.  As a result, she teaches her ways in killing off other ponies.

He was pretty fantastic in his patience with my busy schedule.  I was very happy to find he was very pleased with my result.

If any were curious, the original sketches had a fair variety of other ideas for the cover art involved, but the only one I truly liked was the one that ended up into the picture above.