Two things, Samara looks to good in the picture, and Jigsaws face is... not his face. He wears a pig mask. And some type of red and black robe.
alright mr. analyst, im pretty sure gas went for a cute like approach to samaras face for the portrait...and your master knowledge of the saw films is astonishing. Gas obviously wanted it to be samara vs. the puppet. the puppet doesnt have a name in the films but is the general mascot for the Jigsaw killer. Using the puppet instead of the real killer is a much more effective approach for this piece.
Gas, i love this, its executed perfectly in my opinion. i love the red phone, it stands out so well in the scene. It looks more sepia than black and white, and i like that more. The only think i think you could improve on, would be the text.