Very nice and living painting ^^ I really dig the atmosphere and the contrast between the colors of their clothing and the firery hell behind them. It's confusing to look at (which it should be, I mean a good kind of confusion) , trying to figure up and down, to decide if their both falling, just one or none... I know there's a good painting when my mind start filling up with these questions lol ^^
Just a few tips to give if you'll let me ( you could just stop reading lol) As Chokes go, yours would take a hell of a long time because from what can see, you not crushing any important vessel, just the trachia, and it requires quite a good amount of applied force to break it. What the man choking the other could do is try to move his right hand behind the other's head, and grab the shirt of the guy with his left hand. The point is to kind of make a scissor motion with your arms, I would line up my elbow with his adam apple to make sure I'll hit the arteries, and than try and push him as far away from you so he doesn't stick his fingers in your nose or grab your ears( hurts like hell) You're forarm and biceps end up applying a sizeable amount of pressure on the veins on each side of the neck, with a good lock like that, you can't get a guy to the ground in around 10 seconds, shorter if you're much taller than him (leverage). They call the difference between the two a AirChoke and a Bloodflow Choke, the later being the most efficient but harder to be accurate, the more muscles the guys as, the longer he can resist both.
Sorry for all the UFCgeek attack lol I did a similar scene not so long ago and my brother(blackbelt smartass) made a point of showing me how to do that move, fell unconscious so many time in the same day lol
Of course, the character could just suck at armchokes, you were already aware of all that, and I explained for nothing.... Oh well ^^
Anyhow, very nice work, can't believe you weren't already in my watch list.