ok dude, IMO you dont need a huge amount of exitement live. as long as you guys lock in together and everything sounds tight, your good to go. However, if you still want to improve stage performance, talk to your band about it and if they all feel the same way, just practice it. I agree with the giant mirror idea but its kinda hard to get a GIANT mirror. so just have a friend or family member record you guys in your practice space and sit with your band and pick out what you want to improve. after that, practice is the key! Good luck!