I notice so much criticism about Rey and the artwork. I think it is pretty good.
One thing... as an artist - it's hard to beat the familiar eye.
For example, draw your hand. Does it look anything like your hand?
Hands are one of the hardest things for artists because the viewers sees it so much.
We will notice the measurments, the portions. If even the slightest thing is off, we notice it rather easily.
We see Rey's face all over. More than anyone else. We will be able to critique the likeness much easier, due to our exposure.
All I'm saying is, it might not be exact, but it's pretty good.