For me, the chin / jawline feels a little stretched vertically. Obviously you have to go with your preference for the female face, but that is what is standing out to me
Run the cleanup utility and get rid of non-manifold geometry, and weld all vertices with a small value threshold before extruding, to make sure there are no overlaps.
i think he was asking about vertex animation that doesnt need bones to animate the vertices https://docs.unrealengine.com/en-us/Engine/Content/AlembicImporter
So far, so good! The vertical logs in the reference kind of seem to be bowing under the weight of the heavy roof, where as yours seem kind of complacent.
It seems to be missing some verticality. Perhaps it'd be better if you added some bigger hills and whatnot. It will also help with the overall picture, I think.
Does you object have a lightmap? If not, the engine will try to bake lighting into the object's vertices. The verts will probably bake black since they are so close (or in) to the wall.