Nice work.
good first attempt at lip sync... ok here's a couple of notes...
do some instrument syncing now, your dude with the purple hair was just about right, but the other guitarist was playing notes that weren't there, take note of where their hands should be on the frets, whether they're srumming or picking, and when they change notes and match it up... and your drummer looked like he was rocking out to the wrong beat. Your singer was spot on..
Take careful note of the sounds coming from your band and match them like any artform.. it's the details that make it great.
Nice work, you the first person in 20 mins that i didn't vote zero for.