15yr old begginer pitcher: HELP!

Slow motion video

I am 154 pounds, 6’1

The vid is marked as private

How do you make it viewable because I can view it on mine and am not sure how to make it viewable by everyone.

looks fine to me…

Is there anything in particular you’re concerned with?

I was just wondering if there was anything I could use to be more efficient or throw bette, or mechanically change. I really dont have much of an Idea on what I should be doing better but there is always room for improvement so any input would be appreciated.
I was told I needed to use my legs more. Any feedback would be good