some people use body filler and stuff to make a spoiler. i found it easy to just use a cd case.
1. if you take off the top part of the case there are little pieces that hang down off the top and bottom. u can cut them off at whatever size u want.
2.(optional)cut off some small pieces to go on the ends of the spoiler.
3.cut really small pieces and file them between 1/4 to 1/2 way up to the size of the holes.
4.carefully super glue them all together.(make sure the spoiler is even on the pegs or else it will look dumb.
5. once it dries put extra super glue sround the base to really hold it down.
6. have fun looking at your new awesome spoiler.