experimented with trying to create a rounded glass effect for the magnifying glass.its a little rough but It might work.
I used a 1:1 ratio of fair skin and olive green for the flesh  hightlights..Its pretty bright and pallid looking not sure if the skin needs any more.
mixed in 2 drops of blackened brown with 1 drop of olive green and one drop of tanned shadow with 8 drops of water to create the trenchcoat shading wash . then used just the midtown blend to try and bring back the mid tones. It might need another thinned coat of midtone before highlights but I like the shadow color

Welp here he is so far.