Agree with PA2016BACKSTOP. I have taught a little hitting over the years, and it seems each kid understands things differently. So......I have to find the way his brain will process the info. Getting the correct thing to happen can be explained in 20 different ways, depending on the person and how they process. So, as said, ask questions if getting a lesson, and don't get it. Study the guys on TV. See what they do with the feet, the legs, the hips, the hands, wrists, elbow, back, neck, and head. There is all kind of good slow mo videos online to study. Hitting technique is all very similar in the Bigs, once the swing has started. Find a good coach. Hit the inside 1/2 of the ball. Hit it the other way. Simple thoughts to keep your hands inside the ball. Your hips are definitely flying open way too early, as said previously. Building a swing takes time. Fix one thing at a time. Good luck!