Thanks for the feedback, guys. Any more comments would be welcome!

Yeah, I think I am always stressing the fundamentals.. feet positioning, forcing the guy away from the goal, and playing angles. The things I don't know much about are more than the basic defensive technique (basic checks meaning poke, slaps, over-the-head, wraps, chops..). I know more advanced defensemen work on things like timing and setting a guy up.. but I hear names of checks I have no idea about.. butt dig, can opener, etc.