Friggin horrible! BUT that just means there's so much room for improvement... if that was perfect jump form then you would have trouble gaining more inches
1. You're going to have to run faster.
2. You're going to have to learn to come into the basket at an angle.
3. You need to jump further from the basket at take-off (I have this problem too).
4. You're barely even.... planting. I swear, on both jumps, I thought you were going to take off from one foot.
5. Practice jumping without the ball first to work on technique and learn to use your arms when you jump (the swing).
x2
btw as for bananas, start off with like 6, no need for 12 right now..
you need to do some submax work, just trying to "act" the part of some high level jumper.. by that i mean, come in on an angle & plant deeper... you can do this submaximally, maximally it won't happen until you get in some submax work.. so just go light and work on getting some knee bend, you barely bend at all it's pretty crazy haha.. it'll probably have you jumping lower initially, but once you start improving your runup and plant depth, you'll start getting up higher.
don't worry about run up speed as much yet until you work on getting lower in that plant, it definitely won't happen until you can plant deeper at your current speed.. think about throwing yourself into the ground before you jump.
work on 1,2&3 step runups.. 1 step into a half squat style plant and jump.. etc.. eventually when those get better, should happen fairly quickly, work on 2 step, then 3 step etc.. warmup with those as small technique drills before your jump sessions, to help reinforce some of those things you need to do.. when you go 'fast' and do a big runup, its hard to change things.. with 1,2,3 step drills, you can really focus on those changes much more effectively.
peace man, look forward to seeing some big progress over next 4 weeks, much to be made