Develop a line of action
One key aspect to consider when creating a character design is the line of action. This is what defines the direction of your character, as well as being a useful narrative tool and bringing a feeling of movement.
“Try to bring the line of action all the way out to the extremities,” says Ørum. “A ballet dancer is a good example: they emphasize the line from the tips of their toes to the tips of their fingers. The line of action is also easier to see in creatures with fewer limbs, which is why mermaids are an ideal subject for developing a strong line of action.”