By the way, there was no photo-editing done to the picture. If you've ever wanted to build two things conected to each other upsidown, this is the easiest way.
You'll need: a 2x2 square plate, a 2x2 square brick(both have to be the same color), and two 1x1 cheese slopes(any color).
First, turn the 2x2 square plate upsidown
Then, stick the two 1x1 cheese slopes into the plate(be sure the holes are pointing outward.
Finally, slide the 2x2 brick on top of the cheeseslopes.
There you have it! a step by strp guide on how to make a double-sided LEGO Brick.