i was wondering if any of you could help me with a motion blur effect. I just like doing stickmen ;D so all the frames are hand drawn with the onion skin mode on. And so, theres been a few parts where i wished i had a motion blur for a exageratted slow-mo scene. but i cant figure out how. I searched up some tutorials, but only apply to movie clips. I tried opacity, but it keeps moving the entire layer and its hella hard to control.

Anybody care to enlighten me?
thanks, Luca