I made the large one 1st, the 2nd one I made was with the left over diapers and I was like crap I have to take pics! So sorry there isn't pictures of me making the big one. =)
You'll need a pack of diapers 50 or more. A paper towl roll, rubber bands or yarn, and some type of a base. I used cardbord
1st take all the diapers and roll them, secure with rubber bands or yarn.
Start securing the diapers to the paper towel roll. Make sure to go all the way around.
This is how it should look now.
Now start securing diaper roll around the 1st circle of diapers.
Keep repeating the process until you reach the desired size. When you are satisfied with the size of the bottom tier, the move on the next tier. You should have less circles of diapers the more you get to the top.
When you are done with that, cover the rubber bands or yarn with ribbon. Add something cute on top. I used a rubber duckie. You can use a babybottle, or a cute little softie. (Whatever floats your boat.) Finish decorating with anykind of baby stuff you want. (Oh and if you want to be really cool I heard of people using a bottle of wine or other alchol instead of a paper roll in the middle!)
I used cardboard for the base, and covered it with a handmade blanket. You definately want to use something as a base otherwise your diapers will fall out.