My playoff game from May 10, what do you think?
how hard do you throw? age? height? weight?
looks like you need a faster tempo to quicken up that arm action and eliminate that pause which should help you throw harder.
Im no expert by any means on mechanics but from the vid it seems almost like your only reaching like 60% of what you can with your arm your arm whip is rather slow, but if your throwing strikes and getting outs it should be a problem it looks like you could also generate more force from your legs i feel like you may not be pushing off the mound and striding long enough but that may just be me.
Your mechanics look fine other then that a lot better then most of the kids i see in my league but some small little tweaks and they could be better id wait for someone more experienced to chime in.