Step 1: The Base
Build a base like this.
Step 2: Stack
Next, your going to stack up, you can go as high as you want, but I did 9 then added a door.
Step 3: The Patern
Keep on doing a pattern on the inside, sign then water, all the way up!
Step 4: Finish
Now just build a base at the top, and your done!
Thanks for viewing!