Memory wire is a very special type of steel-spring wire. It retains it's shape, its very hard and difficult to bend, and is not easily to cut. It's pretty hard to break too.

To make memory wire jewelry, you need to do the following:
1. Decide how much to use
2. Cut the wire - be sure to use memory wire cutters or heavy duty cutters.
3. Finish one end
4. String stuff onto the wire
5. Finish the other end

Bracelets: A bracelet for a single strand would ideally be 1.25 - 1.5 coils. For a bracelet you can add more coils if you want. The great the number of coils, the more strands your bracelet has.
Necklaces: A necklace should be 1.5 coils. You can't really use more than that.(Otherwise, the weight of the beads pulls it down and off your neck.
Rings: the same rules apply as for a bracelet.
Wine charms: Use the "ring" size for wine charms.