You have posted quite a few nice pix of different models. What sort of guidance are you looking for? My general sense is the your staging, metallics and uniform shading look really good. Your flesh looks a bit brown and muddy. But perhaps that is only the undercoat? I would suggest you limit your posts to focus on a model at a time and be more specific about what you have done and what sort of feedback you seek. This is not criticism but a suggestion to get the most out of your requests for feedback.
Cheers
Colin