Same disclaimer as always, I'm no expert... lol.
Conditioning-wise, she looks really nice. She doesn't have bulging excess muscle, but she's definitely toned. Overall, nice, fit, and healthy.
I don't really like small heads, I'm not a fan of the doll heads in qh's, so although her head isn't feminine, I don't find it too course or refined. It's a nice medium to me. Personal opinion. ;)
She is, essentially, what I call "the working quarter horse"- my favorite type of qh! She has a lovely, well-sloped, open shoulder, with nice straight legs, consisting of short (well-sloped) pasterns and cannon bones and good bone. She seems to be back at the knee.
Her back legs look a bit sickle hocked, with nice short canons and average to low-set hocks, a nice deep girth, a pretty flat wither, a long back and a nice big QH hip. She is a bit downhill but I would not count that as a flaw at all.
Overall, I find her quite lovely! She looks like she can get the job done and well.