The armor around her neck is a little confusing to me. It looks like the side facing us wraps from the heart around to the back of her neck, but on the side facing the background, it wraps from behind her neck to the heart. I'm also a little confused with how her forelegs were placed. It seems to me that the position of the one closer to the background is in an impossibly high position when taking in the shape of the armor and assuming its symmetry, or maybe the one closer to the viewer is drawn too far to the front of her body.
You have superb drawing skills, but those are just a couple things I saw that took away from the epicness of this piece. Correct me, ignore me, do something about what I said or don't. I like the piece. I just want it to be perfect in my eyes even though it was made with yours.