Viking, How old is he? I'm not the best one out here to give advice but I'll share a Couple of things I noticed. First want to ask if this is his normal leg lift or is he using a slide step? Second is need better glove side control, he's dropping his glove, third it looks like he's wrapping his pitching arm behind him (think equal & opposite). Last it looks like he's stepping out towards the plate rather than leading with his hips. The leg is out there but the hip is lagging. Seems to finish well. Hope others with more knowledge than me will chime in. Best of luck.