FI
RST PRINT YOUR SIGN
OK, To do this you'll need a computer, (or a steady hand of course), actually it's a lot easier if you have a computer AND a steady hand!
Work out what you need and print it full size. Don't worry if you can only fit a letter or two on each page, it will be fine.
Because I'm such a tightwad, I print the letters out in outline form. Saves ink!