- Vinyl number stickers
- 4-by-6-inch watercolor postcards
- Acrylic paint
- Apply a vinyl sticker to the center of a postcard, pressing firmly to ensure a tight seal.
- Lightly brush paint over the sticker in a vertical direction, and then repeat horizontally, making sure to brush well around the entire outline of the sticker.
- Let dry completely before peeling off the sticker.