We were able to do whatever we wanted for our final cake as long as it was things we covered in class. I kept mine pretty simple. I used a butter cake recipe I found here with a choc. chip cookie in between layers, and although the cake was level when I crumbcoated, it had started to sag on one side by the end of the evening. I also found out I should have crumbcoated in the same color as the final coat. And this is why I'm just in the practicing stages! It's all BC also.