When are you coming home?
Male - 30 Years Old
if they don't feel comfortable just moving around playing, they definitely won't feel comfortable with synchonized moves, and it will look forced...I'd say your best bet is just play a shit load of shows, and it'll come for them. I've been in bands with people who are new to playing in bands and most new people are like that, it just takes a while to loosen up and let it out...
I'm personally entirely against doing sync moves on stage, it makes me feel like we should all just put down our instruments and work out full dances that we can lip sync along to pre recorded tracks...with that said, I've seen some bands do it well and i think someone mentioned before about having things you do, but at random points, not planned out. Similar to how josh and jeremy in paramore used to do the flip over the back thing...i don't think it was scheduled, just they learned how to do it and would do it at random points.