Sigils are magical keys that can pull you toward a certain energy, nonphysical place, or a nonphysical master or archangel. The idea is to focus on the sigil and then use your dreams, meditation, invocation, or out of body travel to connect with this energy. For example the sigil of Malkuth can help you to travel to the Tree of Life Sphere Malkuth by focusing on it. You can also make a card and put the sigil on it to help you acquire certain energy. For example you can make a sigil of Geburah put it on a card and carry the card with you, to pull toward you strength and courage.
Sigil Creation: To create a sigil place a piece of paper over the rose-cross template below. Then connect each letter of the word from one box to the next. The sigil starts with a circle and ends with a line. See below where I created a sigil of "Malkuth." If a letter does not exist on the template, then use the sound of the letter instead, or if that is not possible then omit the letter completely from the sigil. Sigils can be create in either Hebrew or English, I have had success using both.