Start by making a round circle marking. This is going to be the circumference of your igloo. Then using your machete, cut the snow to make blocks (do this inside the circle that you drew). Arrange the blocks of snow around the circle to make it round. Continue to stack them up once you made a circle. See pictures.
Once you cut out the first layer of snow into blocks. Cut deeper into the second layer to create more snow blocks.
We got the idea to make igloo after watching the following classic video.