13 yr LHP-video-Mechanics-pros/cons

5’11 LHP
165lbs
7th grade

After 2 innings my shoulder gets sore and my velocity drops. I feel like I’m late and all arm?
Any constructive advice/tips would be helpful.

It says the video is private so we can’t see it.

Also, you should post video for analysis in the mechanics forum. You’ll probably get more looks there.

EDIT: I see you did post it in the mechanics forum. I can delete this post if you want or you can use it to introduce yourself.

It also says that I can’t see it, go to youtube and reset the preference in “edit” of this video to "public.