In my opinion your grip is to tight. Your elbow is dropping and it appears that your cue tip is elevating on the follow through with some of your open bridge shots. Both can be a sign of a tight grip.
Hard to tell just from the one angle, BUT:
IMO, you stand too straight with your stick. You're back is bent instead of bending at the waist and keeping your back straight. You look like you bend both knees instead of keeping your back leg straight. And you're gripping the cue with a whole fist, which means you have to loosen the grip at the end of your stroke to follow through on the stroke or you are stopping your stroke prematurely because you can not bend your wrist.
If you have trouble with a certain type of shot all the time, it is because of what I mentioned above, and what was said about lining up the shot and steipping into it is also true.
I don't think I'm holding my cue too tight but I'll take another look at that. That does seem to creep into my game from time to time.
I do bend both knees. I've tried keeping the back leg straight in the past and I just can't get comfortable like that. I'm a really inflexible guy and my back is the first thing to tire out when I'm playing. I've found bending both knees relieves a lot of the tension I feel in the lower back.
Thanks for the feedback.