Draw Divine Mercy rays on a sheet paper as a sample pattern.
Lay T-shirt on a flat hard surface with the side of fabric you plan to paint facing you. Insert a waterproof paper or cardboard inside the T-shirt between the layers of fabric to prevent Fabric Markers from bleeding through to the other side as you paint.
Place your hand drawn Divine Mercy ray paper beneath the fabric surface
Using your fabric markers and yardstick, trace two to three ray lines at a time from your Divine Mercy pattern.
After you drawn a couple rays, slightly wet your paintbrush with water and slowly paint over the fabric marker lines to create a watercolor effect.
Repeat Steps 4 and 5 until you have completed your Divine Mercy ray pattern
Make it unique by adding words on the Tshirt like “Trust”, “Love and Mercy”, “Jesus, I Trust in You”, “It’s 3 o’clock somewhere” or any other phase or prayer you’d like.