shootings easy. your legs will sync with your arms overtime making your shot an actual jumpshot.
The things you should focus on are B.E.E.F. I volunteered for a 13under summer camp last year, and learned this myself (no i did not know this before hand, and yes it fixed my form a lot).
B = Balance. Set your feet about shoulder width apart with your "shooting foot" slightly ahead of your other foot. Knees should be slightly bent to create a good sturdy base.
E = Eyes. Focus your eyes on your target, the rim. Some coaches recommend the front of the rim, but others prefer the back of the rim. Either way, use the loops which hold the net as focal points. Once the shot motion begins, you should lock your eyes on your target until the ball goes through the basket (or misses).
E = Elbow. Your elbow should be directly under the ball and push up "through" the ball as you shoot. To practice this, you should hold the ball the way a waiter holds a tray. Using the pads of your fingers to control the ball, keep your elbow directly under the ball. Notice that if you let your elbow drift outward or inward, the ball will roll off.
F = Follow through. Once you push your elbow up through the ball, your elbow should end up above your eyebrow. This will make sure that your follow through goes "up" and not "out". Just as keeping your eyes on the target, your follow through should remain up until the ball goes in the basket (or misses).
videos tomorrow maybe if i have time to get in an empty gym and if i have someone to record.
Most thing I notice about gym heads I ball with that can make shots but are very streaky, or get blocked occasionally is that they don't fully extend their arm on their shot. They simply just flick their wrist and it looks like their flexing their biceps

. Don't be that person! Also you want good rotation on your shot, so fingertips on the ball is important. Don't shoot with your palm, and use your middle finger to control the ball when you shoot. your thumb and other fingers are just guides. if you are using your other fingers to shoot you may experience missing left/right sometimes, or you won't get that nice even rotation on your shot.