Prescription bottle

I added this cake in the "First time cakes" category and then came across this category and realized that my cake belongs here. This was a total disaster. I made this Prescription Bottle Anniversary Cake for my parents, however, as you can tell from the picture the bottom part started sliding off an hour after i baked it. The next morning the whole bottom part had crumbled to mush. My parents loved it, however, when they cut it, I couldn't get a decent slice for anyone..it was all MUSH!!!