Lean back more. Don't learn ollies first. Learn butters. Learn to butter on your tail. When you can butter on your tail, you lean back which helps with ollies. To ollie, just pretend you are going to butter, but instead of holding it, use your leaning back motion to bend to board and snap it up. Remember lift front leg first with back leg bent then straighten your back leg to transfer your pop up into your body. When you go flying up, bend your knees in and bring them up. This maximizes your height. You may even try going for some grabs after you get lots of air. When you are at your high point, straighten both legs to stomp the landing. Land on both feet at the same time but remember to bend your knees as you land.