How to make a cake that looks like it's falling over

Hello! I am new to this site, and am looking for some advice on how to get my son’s birthday cake just right! I am doing a 3 tier cake, and am wanting them to all be slanting the same way (kind of like a topsy turvy cake, but all slanting the same direction) with a dummy cake as the 3rd tier, on top of a tier holder looking like it’s being pulled down. I have ABSOLUTELY NO IDEA how to do this without it ending in disaster! If anyone knows how I could achieve this without the tiers sliding off one another, I’d be forever grateful! His party is this Saturday (March 8) so I am not exactly great on time & need help! Lol