I KNEW this was your work! Ha, this is like probably in my top five favorite pictures ever. I'm in Montana Bronies, but I live in blings so I never met your bro John K, but he sure seems like a cool dude.
This is really pretty. I like it. Octavia is best pony. Funny thing is, I happen to be listening to classical cello at the moment. I wonder why she would dislike her own music. Anyways, like I said this is really nice, but I think adding just a little colour to the lips would make it even nicer. I'm no artist, but that seems like it would be a good touch.
Love the "lines" in your artwork. Really adds to the style. Eyes also look nice, I loose myself when I look at them for too long. Background is also nice, love the grey-colour contrast here. Nicely done.