I saw this idea on Martha Stewart . . . she used the coffin as a treat box. But I just made mine as a decoration. I do like how easy the coffin itself was easy to make. Here are the top and bottom templates.
Step 1 - tape the templates to black paper
Step 2 - using a score blade, score along the dashed lines
Step 3 - cut out the top and bottom along the edges
Step 4 - cut the solid lines to be able to assemble it
Step 5 - glue the tabs to the adjoining pieces to form the coffin Step 6 - decorate as desired