When figuring out how to draw an accent or action, I start by imagining the emotion I want to convey, then analyze what tempo conveys that emotion. Let's take the emotion of enthusiasm. That would be a bouncy tempo...maybe a 4 to 6 frame beat.
Then I imagine what type of action my character will perform to convey his enthusiasm. In this case, he's going to spin in the air, making a complete rotation in 4 frames...and so on and so forth.
The above is all timed out on my exposure sheet before I make any drawing. (Note: I use the old school reference of 24 frames per second.) The reason I time everything out first, is that my analysis of the character's timing will dictate how the forces moving that character affect the body in motion. Thus, I draw the body squashing and stretching based on that analysis.
I offer as an example, drawings from the Hank the Spider Monkey test I posted previously. In creating these drawings, I started each drawing from the area of the body that was instigating that particular phase of the movement: head, shoulder, leg, etc.
And below is the finished animation in color.