Step 1: Components Needed:
1) 9v battery
2) 9v clip
3) 2k ohm 1/4 watt resistor (even higher wattage would do, like 1/2 watt, which has slightly thicker wires)
Increase resistance to higher value, say 6.7k ohm or 10k ohm, if you are using lower rating led otherwise the led would burn out
decrease it to 1k, if you have a worn out battery.
4) Insulation Tape
5) LED - colour of ur choice