manic

Make a pattern to your fan, square. Cut a hole for the screws. When
you install the fan back, put the fabric in the front. The install screws
for the fan will screw down with the dryer sheet. Use your imagination.

Or you could cut the fabric big, then using a rubber band place on the
back of the fan, making sure nothing gets tangled. You should try
to use used dryer sheets, not sure if it matters, but Ive read that
somewhere..