I think it's kind of hard to tell exactly where your elbow is due to the camera angle,but it's close to the line if not on it. I think with a slight stance adjustment, your elbow would easily be directly on the line of the shot. Also, you would be facing shot more (as opposed to facing your cue), resulting in slightly less neck twisting. But you already know that. I just thought I'd mention it. It's just a different style.
Hi Fran,
Since I went left eyed, I was getting a crick in my neck from keeping my head from tilting. I'm pretty sure that my head is now angled opposite of Colin's. The slight turning of my head to the right seems to help me to get the left eye over the cue with less tension in the neck area. My eyes are level or very near but my head is looking right of the cue but my left eye is looking down the cue. Thank God we have eye sockets & not fixed straight out of our heads.
Back when I was coaching youngsters in base ball, it was amazing to see the improvement in hitting when I got one to get their eyes level & not tilted. We walk around all day with our eyes level. One should try to walk around with their head tilted for about an hour.
I'm not sure if I have any point here but it can be interesting.
Best,
Rick