technique

I noticed my form goes off track when I try and go heavier with my lifts. An example is my squat when I go and add more weight my technique suffers. How do I improve my lifts without sacrificing form? Need some useful tips with this. Or is that just a pipe dream and I have to accept that my...

I've actually finished my Medical training up to Level 4. So I'm qualified in Intra Muscular injections (Insuluin, Diabetics ect.) I was wondering if a Video on Correct pinning technique and proper procedures would help? Or would i be breaking rules here? If Video footage is a no no, then...