Keep your giude hand up after you release the ball. You drop it too quick on the 2, 4, 5, 6 and 7. Shots 1 and 3 are Dave Hopla calls the guide hand the ''balance hand''. It will help you with your balance.
And watch for your follow-trough going to the side on shots 1 and 6. Focus on the index finger pointing down into the center of the basket after you release the ball.
This video is something to try to relate to
YouTube - Kapono Makes It Look Easy Practicing For Foot Locker 3-Pt Shootout
- has quick & efortless release (uses all the power from his legs by timing his release with his feet coming of the ground)
- his guide hand doesn't drop too quick
- the only shot he missed was short (needed more arc) and maybe to the right (his follow trough wasn't straight, dropped to the right)