Here's a card I did for a swap a while back. Thought you might like to see the technique. I used drywall tape from the hardware department of Wal-Mart and placed it on the cardstock. (It's kind of sticky so you won't want to press too hard--just hard enough for it to stay in place.) I used a Hydra-Sponge to lightly ink the area I had just "taped." When I had the coverage I wanted, I carefully pulled the tape off and was left with the fun texture/pattern shown above.
Stamps: Fancy Punctuation, More Elegant Sentiments
Ink: Versamagic Perfect Plumeria
Paper: Birch, Mulberry Meadow (retired--could use Amelia or Penelope)
Other: Edge Distresser, Hydra-Sponge, Pewter Eyelets and Crop-a-dile