This is pretty decent, and I do think that, while it's not what I generally look for on DA, it's good. A few things, though...
1. The feet: The one closest to the viewer looks flat and the way the line bends towards the back closing on the heel makes it look like the ankle is almost dislocated? I don't know if that's what I'm seeing, but that's the best way I can say it. The back foot is better, but it looks a little stumpy like it's a little smashed. Try lengthening it a bit and dropping the top of the foot down a little. There could also be a little more definition where the ankle goes into the heel. Also, toes do vary in length a bit more than just a tall-to-short gradient, but that's me nitpicking.
2. The legs: My only real complaint here is that the leg in the foreground... The foreshortening is good, but I wonder how it would look if the whole leg from the knee to the foot were made a little bigger? Not much, mind you, just a bit.
3. The hand: The fingers are strange. The ones in the back almost look broken the way they turn up. The fingers look a little stubby, too, but they're not bad.
4. The face: This is the weakest point of the picture for me, but for the life of me, I don't know if it would work if you went with a more realistic face or not. Maybe try bringing the cheek in a bit and getting rid of that bulge? Her eyes aren't focused on the viewer, either, which seems to be where they ought to be looking. The nose is a little strange, too, but I would chalk that up to this being based off of MLP to an extent.
5. The tail: Try giving it more of an angle. Essentially, while that IS a bale of hay, think of it as a box and think of how hair generally drapes over a sharp corner. Nothing major here, just give the tail a slightly sharper angle where it drapes over that corner. Think about it a little, does it drape over either side of that corner? Or does it flop to one side of it and leave the rest exposed? Does the corner poke out between the middle of the tail? That sort of thing.
6. The lines: It's not really so much of a bad point, so much as it is a personal taste thing... But the lines kind of take away from this for me. They by no means have to be uniform, but if they were maybe a little thinner overall? It looks like you've just got big, black blotches in parts of this piece and it reminds me of when I was inking with nib pens and they'd suddenly splooge ink all over the place if I varied pressure too much (which wasn't much at all). Used to drive me nuts!
Overall, I really like this, and I think you're doing fantastic, and I really hope that this helps. The strongest part of this for me what how you drew the pelvis. That looks like it took awhile and was a pain in the ass to do, but it was worth it. I don't know if you intend to revise this piece or what, but it's good as is right now. I'd take the info from these critiques and attack the next drawing!