Video #1 - Approach is OK. Could be smoother transition from 1-6 to 7-10 pacing, and there is a little slip there also. Not your biggest problem. Looking at the frames right around takeoff, GREAT arms back together between 9 and 10. Also last frame with toe still on the ground shows a very vertical release of the jump - this is a strong point for you! Your problem is "sitting" very quickly after you leave the ground. First frame after the toe leaves the ground looks GREAT - like it will be a very high jump. But the very next frame you see the arch breaks while you're still going up, and your upper torso never gets flatter than a 45 degree angle to the ground. This is what kills many of your jumps. We need to work on "Arch" - at least getting you flat/parallel to the ground... Video #2 - Very similar to the prior clip, although this one is a made jump. Again, chin on your chest shortly after takeoff puts you quickly into the dreaded sitting position. We will work on this for you. Video #3 - Same thing, but also noting on the positive side that you are crossing very perpendicular to the bar. Video #4 - You do get LOTS of height on your jump. Watch your beltline and see how much it rises from plant to the peak of the jump - that's not bad at all! Just body position in the air - we need to take control of that!