Click once on the shape you want to stamp. it will follow your mouse-pointer. then Click again to stamp the shape. use 1 and 2 keys to switch between toolbox parts to make the objects bigger or smaller use up and down arrow keys. to rotate them use left and right arrow keys. to re create your building press the green button HAVE FUN!!!!!! by the way for some reason the brick does not re create the project when it is touching another part and there is more than one brick piece... i do not know how to fix it. if you do, do a remix that tells and shows how, or post in the comments how to do it :)