Great expressions that one could easily imagine on said characters. Kept up the great work. Wish I could see the full cover of the fashion magazine, the bit I can see intrigues me enough to want more.
On a tangent idea, I wouldn't be adverse to the each of Mane 6
But really it's up to you, your an individual with deadlines and own desires. Also the dangerous slope of once you do one a few people will expect you to do ALL OF THEM (not just the main, the fan favourite background ponies.)