Mine is stripe patter. Just go to a fabric store and start pulling fabrics off the shelf. If it is thin enough and you like it, go for it! Could be burlap, could be muslin, could be silk, etc.
To the rescue from the cave.....
Is it possible to cover up the desk completely? The desk being off center is going to cause some major symmetry issues.
I don't understand how people can get so upset when smart people like Rick correct their information. If you think he is being rude about it, many times he is correcting safety issues. Being harsh is the only way to get the message through some of the thick heads here. Calm down, and listen up.