not if your form is off if your form is good then it wont hurt to shadow box i don't think it will make it more powerful if ur just shadow boxing. try using a heavy bag
Do clap push ups and do weight training that works your push muscles (chest, shoulder, triceps)
Listen to me very carefully. I want you to quit your job and go back to school as soon as possible.
no
A day make me a batter and faster puncher and more powerful training for mma