I tried doing this multi-layered drawing of Marley over a nonobjective abstract painting... and just leave all the imperfect transparencies as-is... There may be some value to it. Parts came out ok, others not. Again, I copied the faces from previous photos and drew the bodies and remainder with out reference.  I should try this again... I used colored pencils, oil and soft pastels.. a crazy mix of just about anything handy.