For lighting, a warm and cool light coming for the opposing back/sides and a more neutral light for the main body works good.
Looks like you have some weirdness with seams between materials. As in, transition from pipe to face is an instant material switch. This occurs heavily on your model, such as cloth > pipe > metal back canister. Slight transitions such as where they hook up or where flesh meets metal and has that open sore look.
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For lighting, a warm and cool light coming for the opposing back/sides and a more neutral light for the main body works good.
Looks like you have some weirdness with seams between materials. As in, transition from pipe to face is an instant material switch. This occurs heavily on your model, such as cloth > pipe > metal back canister. Slight transitions such as where they hook up or where flesh meets metal and has that open sore look.
How about posting wires?
Are you working from a concept? It looks like you might be just winging it, it has a lot of inconsistency going on.
For example the high-resolution texture and low-res geometry do not mix well. I'd up the geom detail, especially for the face.
Using mostly photo-source is going to bite you in an interview, they'll want to see if you can paint rather than rely on a photo of a face.
Neat start, seems to need quite a bit of polish though.