I am doing a 7 1/2 inch centerline-19cm, because it fits most, especially if you use elastic cord. But you can do whatever size you want! Make sure it is a little bigger than the size.
Tie a double knot at the end. Make sure there is extra string after the knot, so you can tie it off.
As quick as possible insert the string into a flame, to melt the end so it does not fray. (CAUTION: DO NOT DO THIS STEP IF YOUR STRING IN FLAMMABLE)
Here is what it should look like.
Start stringing on seed beads. You can do a pattern, or just one color.
Choose several charms and unique beads.
Go ahead and insert them onto the string.
Continue the pattern. You want the pattern to continue. For instance, I don't want to end in blue on each side.
Move the beads from the knot.
Tie a knot. Don't include the knot from the beginning. If you are using elastic cord, make sure you do not pull it tight, because it will not stretch.
Do a second one, make sure it is very tight, as tight as possible.
Do it one more time.
Cut of the extra string.
You can also use just one unique bead.
Or one charm.
Or spread charms and unique beads out.
Or use no charms or unique beads.