We then made two papier-mache balls and cello-taped them to the head and put more paper over to make sure they were well secured and left it to dry further. Then we painted it and finished with a coat of clear varnish to seal the paint in case it rained on the night. On suggestion, take the time to double fold up the edges on the screening. The edges can be very sharp if you do not. Also make sure the wings are bent and very deformed. We had such a fun time with this costume and everyone who saw it just laughed. My son won most creative costume in a costume contest with his swatted fly. My son is crazy about bugs. We gave him ideas for insect costumes and he decided to be a fly. When my husband suggested that he be a swatted fly the idea really took off. The flies’ head was made of papier-mache. To get his head size I blew up a balloon to fit inside his Bob the Builder helmet. Then Eoin and I covered the balloon with papier-mache and left it to dry out. I then cut it to the appropriate size.