12 yr old Dad needs help HELP

First I have been looking for something just like this. Thank you so much in advance. Next I have 5 pictures I pray will help with what I would like to help fix. Its mostly the finish that I think he needs to reach more and his back leg should do a better follow through? The first one I have is to show his long step and the last 4 pictures are from the last tourney we went to in Redding, CA. I am sure what drill he should do and again thank you guys so much with this help.

Wash, the content is unavailable outside of Facebook which I’m not on, maybe you can upload to photobucket.