Yeah the split screen mode is what I'm talking about. This model, I think i got in an anatomy bundle a while back, can't remember where. But this sorta thing would do the trick. https://www.3dscanstore.com/anatomy-reference-models/anatomy-reference-bundles/range-of-movement-3d-scan
"Essentially, I need to focus on building the forms/shapes and let them determine how the edges turn out?" Yeah I think that's a good way to put it! Really this comes down to building up your observation skills, picking up on subtle form changes. One exercise that helped me a lot was doing straight copies of 3d scans,…