Create vinyl stencils by printing out the provided patterns and transferring them to individual vinyl sheets. Apply the vinyl stencils to each canvas.
Paint over the stencils using Cool White. (This will help seal the vinyl so that you get less paint leaking.) Let paint dry completely.
Start the rainbow, by applying the first color and continue adding small amounts of paint until you get your desired coverage. Using the same brush (no need to clean) move on to the next color, working from True Red to Bright Orange to Bright Yellow to Festive Green to True Blue then to Lavender, continue this pattern.
Blend the colors as you go.
Continue until your rainbow is complete. Let dry completely.
Remove stencil to reveal white canvas underneath.
Gather supplies for wool ball garland.
Thread each ball onto bakers twine in rainbow order. Alternate sizes if desired.