Mix a dab of Black with Brown to make Dark Brown. Add water and brush on the block, wiping with a paper towel as you go. Apply the stain mix to the sides of the block and wipe with paper towel. Center the heart template and hammer nail in each circle. Tear away the paper template. Use tweezers to remove paper from around nail if needed. Knot string around bottom nail. Do 2 runs around the perimeter of the heart, wrapping around each nail as you go. Loop back and forth around nails. Finish with two more runs around the perimeter and then tie off string at bottom nail. Scuff edges with sand paper and add fun Valentine saying!