I switched to creative to fly and then I just right-clicked like you normally would to place a block on top of the cake. :) And sence you cant place a cake in mid air I had to put cobblestone below the cake for the intrance and glass for the roof. :) hope you liked it and that this was helpful. :D

I did but I used a little bit of TMI to get a little bit of the cakes but I must have forgot to change it back again. but thanks for the comment and the notice. :) the next update I do it will be survival. and be alot bigger. :)