Spin the light sabre in your Hand
Cool Light Sabre Effects:
If you have change weapon on the mousewheel then this will work for you!!
Get your sabre out and the quickly and consistently spin the mouse wheel (try to do this when you have no ammo or hardly any weapons, thats when it'll work best) quickly and it will look like the sabre is doing 360° spins around the middle-finger, it looks cool