First things first, some simple supplies you will need:
a flat head and a phillips head screw driver
approximately 1/4 yard of fabric
scissors and a rotaty cutter and mat
First thing you need to do is dissassemble your fan blades (take them off of the fan, and take all of the screws and everything off of the blade). Then you will need to clean the blade, they are usually pretty dirty on the top where we can't see.
Cut a piece of fabric a little bigger than the size of the fan blade, cut one for each blade.
After it is dry take your very sharp scissors and poke the holes that the screws go through on the blade, then add your hardware back to the fan blade. If you have an ugly gold fan like I do, you could also spray paint the hardware, I decided that I like the ugly gold next to the brown camo so I left it. But if you paint it, do so before putting it back together. :-)