I don’t expect perfection with CGI people, mind. I just hope to make it look as good as the CGI Leia in Rogue One did, and many, including myself, believe she was handled better than Tarkin was (it helped her case that she only appeared in one brief scene at the end).
Leia in R1 is perfectly believable right up to the point where she speaks and we’re right back in uncanny valley again like with Tarkin.