act like you own the place!
watch other videos and see what they do, emphasis the guitar playing, drumming, singing. Zoom in/out more but make it steady. If you want a static shot, hold still and don't bounce and the best way to prevent this is to use the viewfinder, not the lcd screen. get down low and up high for a different perspective and for more interesting camera angels.
you will get better with time and practice as long as you know what you want it to look like before you begin to film. just imagine how you want it to look when you watch it.
good luck!