Simple,
Go to the arts and crafts store and buy a $50 projector, pin up the sail in your living room at night, project the artwork on the sail, trace with pencil, bust out the magic markers and go to town.
Total cost, $50 for projector, $5 for the markers, and $7.50 for the six pack of beer you'll be enjoying knowing that you'll be getting a full refund on the projector when you take it back to the artstore.
Chip
www.whirlwindsails.com