Prepare your cake batter according to box instructions.
Divide red velvet cake batter into an 8-inch pan and a 6-inch pan; bake
Cut the 8-inch piece into two 8-inch layers
Cut the 6-inch piece into a smaller circle, using a 4-inch cookie cutter
Bake one box of white cake in 8-inch pan
Cut the 8-inch piece into two 8-inch layers
Add blue food coloring to second box of white cake; bake in 8-inch pan
Cut into 8-inch blue cake with 4-inch cookie cutter
Cut into one of the 8-inch white layers with 4-inch cookie cutter