She looks fine whenever she's doing a certain expression. The problem is her default face. It looks very flat, and her eyes are shaped completely different from in any other work.
And we DO have the final product.
You can see it at both 0:30 and 1:12.
On the other hand, she looks good when she's lying in bed and at 1:50.
On an unrelated note, at 1:00, if you look into Young Shirou's staring eye, you can see a reflection of Kiritsugu in them.