Make bees. Prepare two decorating bags with couplers. Prepare one bag with reserved yellow icing and tip 16. Prepare second bag with black icing and tip 5.
Prepare third decorating bag with tip 16. Fill with remaining white icing.
Using toothpick, draw bee shapes and honeycombs around sides of cake. For round bee heads, use large end of standard-sized tip to mark circle in icing.
Using black icing with tip 5, use dot technique to pipe bee heads. Switch to tip 16.
Using black icing with tip 16 and yellow icing with tip 16, pipe alternating stripes for bodies of bees. Using white icing with tip 16, use zigzag technique to pipe wings of bees. Reserve remaining yellow icing.
Switch black icing bag to tip 3; pipe antennas. Switch yellow icing bag to tip 2; pipe outline for honeycombs.