Lovely work Pongsatorn, especially on the drapery of the uniform. But if I can make a few suggestions about the face:
The nose in particular looks like she's had a modern nosejob to me, so I've made the nostrils more evident. I also reduced the eyes a bit and moved them apart, lowered the head and modified the neck musculature slightly, as well as emphasising the filtrum just a little more. I think this makes her look more like a middle-European country girl than a model.
It's probably too late in the project to consider doing it now I think but I would also have lowered her breasts or made them smaller. The way it is currently she looks like a superhero, or that she's wearing a good (modern) bra
Einion