You may not know how to coil your wire properly to prolong their life and quality. Some people just leave their wire to knot into a huge heap of inconvenience.
Coiling your wire is essential whatever you may need to coil them for. This instructable will cover special tecniques to coil your wires with.
Step 1: Thin Wire Coil
When you want to coil a thin wire with only 1 output/input on either end you use normal coiling. The first step is to run your hands through the entire length to get out any twists in the wire. Then, with one hand on the end and one about 30cm down the line (this is actually relative to how big you want your coil. Make your hands further apart for a bigger coil) make a 180º twist with the hand down the line (not the one on the end!). Then bring your hand up to the one on the end and you should get a nice loop! Continue until you have finished the wire. It is a good idea to secure your coil of wire with a thin stip on velcro. You can buy some specificaly for wire at shops like maplins.
Step 2: Under-over Coiling
For thicker wires you need to use under over coiling. This keeps the wire strait in its coil so twists cannot dammage the wire. You should use this for wire with more then one plug on the end, like looms. (I did not have a loom at the time so I have used a piece of rope instead)
Also, you will want to do under-over coiling on the floor if you have a large, delicate wire/loom. Begin with a normal twist loop to make a circle (make this as large as possible because tight coiling is not very good for the wire) Then you need to make a twist in the opposite direction and bring your hand behind the uppermost piece of wire. The image should make this more simple. Then do another normal coil and continue like this, normal, UO, normal, UO and so on. With large cables like looms secure the coil with PVC/electrical tape.