QUESTION ONE:

a) post a pencil drawingby M.C. Escher (everyone must have a different image)

b)  explain where you see the following chairoscuro light terms in the Escher
pencil drawing that you posted:  (you may copy and paste light terms in your post and
fill in the answer)
Highlights: the paper and begging of the wrist 
Light: the begging of the hands 
Shadow: near the knuckles 
Reflected light:the veins in the hands 
Cast Shadow: the knuckles ad fingers around pen