Here is one of the most striking panels from the Bruce Timm illustrated Masters of the Universe minicomic "The Terror Claws Strike!" This illustration above many others really does showcase the artist's influences; in particular King Randor's left hand reaching outward which has all the hallmarks of a Jack Kirby illustration! Also, by looking at Teela you can already see Bruce's stylized technique for drawing females which would become one of his best-known traits in later years. And as for Skeletor, as ridiculous as the Terror Claws are, rarely did he ever look this menacing!
(click on the image to see it at full-size)