Omg Ron I love this so much because of how much it focuses on the tension of taking the shot. I also like the art and the post processing grain effect you going on there.
I'm surprised that the other dude was talking a lot of crap for someone and didn't even shoot back, which is honestly my only real critique for this. I feel like he should've been able to shoot you if you waited too long since he apparently killed Rohnny Ringo's dad, so he must know how to handle a shoot out unless he's bluffing. I feel like it would've also been interesting to have him have a dying line when you shoot him because he doesn't seem to like to shut up and it would add onto how dramatic/somewhat comical in a way this feels.
Besides all that I really like what you did with this. Good job dude!