11. Write it down.
Write down both the transmission (the message you are trying to send) and the message you received. Keep records of your attempts and study your results to see if you improve as you develop the telepathic muscle.
12. Neutralize other factors.
Try not to look at the other person while you transmit so that body language doesn’t give anything away. At the beginning using body language may help you, but it’s also cheating since technically telepathy does not involve using any of your five known senses.