yeah this is looking better every time, man. The others have hit it on the head though. You still need to flesh out the form a bit more. Give the mouth and nostrils and all some thickness. It still looks a little bit too much like a smoothed base mesh and not a mesh of its own.

I'm pretty sure you know how neck muscles look so I assumed you were going for something very inhuman there. As long as you take it along with that in mind - it still has to make sense as far as musculature goes. It would be easier to stick with more human musculature and just sculpt out the sternomastoids though, imo

keep it coming