1.Try to get full extension from the blocks when you start instead of trying to cycle your legs as quick as you can.
2.When you’re in the blocks and you have your toes touching the ground, you might not be coming out at as low an angle as you could if you had your feet higher up on the blocks and not touching the ground. However, I don’t see what benefit you get from raising them even higher up the blocks like you do in your video. You want to get a 45 degree angle out of the blocks and I don’t think you raising your feet up that high helps you to do that or helps in any other way. Why do you feel more comfortable with your feet that high?