I going to use the arrows like its used in this image:
(I'm not fussed about the 3D effect they used. I just want the curved shape of the arrow)
I guessing I need to use the orient feature to keep the arrow facing in the direction of motion so no problem there. The problem is that I can't seem to manage to make the arrow grow and move in a curved motion.
I'm using Falsh Professional CC.
create your arrow. then create an expanding mask that reveals the arrow from its tail to its head. animate the mask using a shape tween. you'll probably need to use shape hints.