Thank you to farnazmom3 and pattyasken for their advice! This was about 18 inches tall; 4 tiers of 9" rounds, with a rice crispie treat neck. I only had to redo the neck about a zillion times, and decided to "hide" the mistakes with a longer wrapper around the neck. The client was so jazzed! And, it made the hour plus trip with minimal damage...nothing a little gel could not fix.