Two dimensions is having only the dimensions of height and width, like a square. Three dimensions is having height, width and depth, like a cube.
This can be almost anything. It can be a representation of an object, a piece of artwork (realistic, or abstract), a mosaic, a colour study, a picture from your favorite book?
The idea is to keep it flat. Pretend like you are drawing or painting or taking a photograph, but try to create it out of LEGO. Have fun, only play along if you feel inspired!
Here are what other kids from around the world created for this challenge.