How do I beat or get past a tackle that waits for me to shoot my hands before he does

My apologies if this isn’t Dline related but if I’m not eligible to play my grade 11 year but I’m able to get practice film will scouts look at that film?

I wanted to ask if you could give me any tips on how to improve my three-point stance I don't usually come out of a three-point stance. I usually come out of a two point stance.Whenever I come out of my 3 point I feel slower.