Just a few storyboard samples found in an Internet Archive download of a 1993 storyboarding guidebook.
First is from late season 2 GI Joe episode Sins Of Our Fathers, drawn by Bill Barry. In this episode, Cobra Commander has succeeded in raising the monstrous creature dwelling underneath the ruins of Destro's ancestral home (destroyed in season 1 episode Skeletons In The Closet) and makes an unholy pact with the creature, offering Serpentor as a sacrifice. We join the action as the monstrosity makes landfall on Cobra Island