This was a DIY project my friend did for her Halloween party. I loved the simplicity.
Black foam board
White foam board
Green plastic tablecloth
I believe she use a box cutter and pencil to trace and cut out the shapes. We took packing tape and attached the individual features to the tablecloth right before we hung it up.
You could easily do this for a door hanging.
This is not a proper tutorial but I think this project looks cute if it has a little personal touch or flair by the person who created it rather than tracing a prefabbed stencil.