Attach a jump ring to either side of your clasp. Once you’ve measure out your desired length, triple knot your bead cord onto one of the d-rings. Add a dab of clear nail polish to strengthen the knot and let dry.
Start stringing the first color of your beads. If your beads are smaller you can use a needle for this process.
Once you’ve reached the spot you want to color block, begin stringing on your second color. Finish by adding your first color bead until you’re satisfied with the length. Triple knot the cord on the remaining jump ring, clip extra cord, and seal with clear nail polish.