Step 1: The main section
First make a rectangle 250 by 100.
Then make a curve or triangle at the bottom.
And a line all the way across 100 down.
Now use the shell tool to remove part of the top[ of the cube.
Finally add another rectangle to the cube.
Step 2: Finishing
Now use the shell tool to shell the entrance, the one in the picture need to be wider.
Then if you hadn't already make it into a triangle.
Fourthly draw a line across the tip of the triangle then remove it with the pull tool.
Finally add a hole in the compost box.
Step 3: Finished
To completely finish this project you must put sticky (the sticker the better) then fill the compost box with some rotting food and cover with a layer of soil.