Kevin David Anderson's Night of the Zombees cover concepts. Let me know by number which direction(s) you like and I can develop the ideas further.
Featured
Action concept with 3 protagonists brandishing amateurish weapons. Zombie hands reach up around them.
Honeycomb concept, focusing on title. Punched out cells features signs of zombies, skulls, grasping arms, leering eyes.
Rear of two protagonists using strong yellow/black color scheme. Title forms square composition.
Shaun of the Dead send-up, similar pose, but with child protagonists, and noticeable bee costumes on background zombies.
Simple design - grasping zombie hand in style of Night of the Living Dead with bee landing on it.
Bee stripe concept, focusing on bold color and design. Yellow areas feature illustration slices, of bees, zombies, the protagonists, and bees. Black areas feature text / author.