my triceps pose and the classic triceps pose
Theres no rule and I dont think Haney ever touched his arm while doing the side tricep. Its actually physically impossible for some people, you need to life your head though and I think it would be better for you not to tough your other arm its making you all scrunched.
For the side tricep pose, is it necessary to hold your arms behind your back or can you keep one arm straight down?
This would be the proper way..