Glue all the little squares together so that you have a little one by one by one centimeter cube. I glued them together by stacking them and then holding them between my fingers while I coated the outside with hot glue. Now on the sides where the layering shows add more pieces of cardboard and clamp them together until they dry. (I didn't use hot glue for this because if you have used hot glue before you might know that if it's not really hot you won't be able to get the pieces real close together). Once it is done drying just trim the edges of the piece of cardboard you just put on. Now just glue a piece of green paper to the top of the block (this is for the grass) and repeat the process for gluing the cardboard together for the green piece.