What I think needs to be changed a little is the sculpt shows some puffiness to the sides of the lips as they go out to the cheeks. All of the photo''s of Liotta I looked at show those areas to be pretty flat going out from the side of the mouth to the cheeks. Above the top lip also looks a little puffy, should be a little flatter. I think the puffiness around the lips is the issue.
Ok, thats what I meant to say. Its the mouth area that is throwing it off.