I have found a quick and easy way of making tarps: Cut a small piece of thin aluminum foil to the size you want. Gently crumple the piece to make it look realistically wrinkled. Apply a light coat of olive drab, let that dry, then dry-brush with brown or a lightened olive drab. Then you can form the foil to the shape you want. I have tried making tarps from tissue and diluted white glue, but I find this technique much easier and more realistic.
Tip submitted by:
Jim AllmanGrayling, Mich.