You can make your own cake in the shape of a monkey head by baking one large circle(10-12 inches) and 2 smaller circles (about 6 inches)
Use the large circle for your monkey head, cut one of the circles in half and place each half circle on opposite sides of the larger circle for ears frost in chocolate, sealing the connection between head and ears. Place remaining small circle in the bottom center of the larger one for the monkey's nose. Frost with a much lighter brown (mix 1 part chocolate with 2 parts white frosting)
Use jelly beans for the nostril and eyes.... nostrils are at the top of the lighter circle about one half in apart and eyes are half way between the nostrils and ears on the larger circle, resting against the smaller circle.
Use cherry licorice laces for the mouth on the top smaller circle... just one lace in an inverted arc along the lower part of the circle.
You can add further detail by making a lighter brown inset for the inside of the ears.
Hope you understand this... AND I hope its helpful!
K.