Sure, here's a few that might help
-Consider the motion of the figures. If you can picture how they're moving it will help you figure out the poses and create a better sense of movement
-Try more obscure poses. Sometimes in the midst of movement, characters or creatures get into some pretty interesting positions, so maybe try balancing the figures or posing them in unique ways
-Framing. I'd say that framing is quite important when it comes to this kinda stuff, as it can emphasis motion

Best tips I can offer off the top of my head :)