Gather beads, charms, string or cord, scissors, and a phone strap loop or adhesive phone charm attachment
Measure and cut the cord to the desired length
Thread beads and charms onto the cord in your preferred pattern
Tie secure knots at both ends to hold the beads in place
Attach the charm to a phone strap loop, lanyard hole, or phone case attachment point
Trim any excess cord
Check that all knots are tight and the charm is securely attached