Get halfway through a model and find it's an unworkable mess? Can't add edge loops where you need them? Can't subdivide a mesh properly? If any of this sounds familiar check this course out.
That's some nice modelling, and damn fast too! As for the pose I'd make the head more horizontal. It'd make it look more like a predator out hunting imo
Liter is French for 'Gimme some ****ing cola before I break vous ****ing lips!"
Oh, one crit though, what you intended to make the folds of skin looks more like fat to me, but I might be wrong. Maybe make it look more like skin folds then chunks of fat.