So what do you do when you have a third story apartment with a balcony that is covered in snow?  You convert it into a man fort to use against the neighbors kids.  Her is a few simple steps how to do that.

First access your base camp in its' natural state, seen below.

Monroe Pic

Next, add port holes and beer.

Monroe Pic

Finally, grab a beer and wait for the neighbor kids to use the hill behind you as a sledding hill.  Use the excess snow on the balcony and unleash hell from the heavens.

You're welcome and enjoy.