Are you ready to hear my honest opinion? At first glance I thought that there's a lot to like about her. And, chances are, there IS a lot to like about her. That, afterall , is the most important thing.
She has a long back which looks a bit weak. Her Lumbo-Sacral joint is further back than the point of her hip , which means that with a long back she may have a hard time reaching under herself or tucking her pelvis under so that she can put more weigth onto her hind (which is one of the goals of mid to upper level dressage). Her hind legs have very good shape and angle, thoug the hock itslef is a bit "cut under" in the front. See how it is narrower under the hock joint, kind of abruptly? not a big deal but it is the same deal on her knees; tied in behind and below the knee joint. These points make joint less than optimallly strong. Big deal! Her gaskin is great and she has a very long femur and a low stifle (good for reach under herself).
Good chest depth (for stamina) and good canon bone length in front, though I wish her bone was beefier overall.
her neck is lovely and shoulder really nice.
Her head is refined and very appealing. I get the feeling she will be a really nice all around horse. Before you start dressage, maybe just riding her on trails for while, if she can do it mentally . Will need some training. But riding uneven ground and hills and such will build up all the supporting small muscles to help support her joints.
That's my thoughts. I am NOT a pro, just an armchair conformation student.