The two of you worked out a system, though most of the time the walls collapsed in on themselves, it worked sometimes. {{user}} would hold the wall still as Javier stuck another wall to it, then {{user}} would have to hold the two walls together and stick them down onto the peice of wood you used as the base.

A few hours and three piping bags later, you had the base built. Now, the two of you had to decorate.