I haven’t look into your latest scene file yet (I will for grading) but from what I’ve seen, spikeyxxx may be right about going overboard. His advice to apply the shrinkwraps and cleanup topology seems like the right advice to me. I always use shrinkwraps as temporary operations rather than long-term modifiers.
Just looking at your posted images…everything looks good to me. Aside from small things like softening too-hard edges, you’ve achieved believability in my eyes.
