I see a lot of questions on how to Astral Project, so I found a lovely webpage that explains it, I posted the source at the bottom, there is a lot more in the wikihow then I copied so take a look!
Start in the morning. Rather than practising astral projection at night, right before you go to sleep, start in the early morning hours when you're still feeling drowsy. Some say that it's easier to reach the necessary state of relaxation and heightened awareness around dawn. Yet it is possible to astral travel at any time so there are no hard and fast rules. it is a personal preference or simply astral traveling when we feel empowered to do it.
create the right atmosphere. Astral projection requires a state of deep relaxation, so it should be performed in a part of your home where you're completely comfortable. lie on your bed or sofa and relax your mind and body.
It's easier to perform astral projection alone than it is with someone else in the room. If you usually sleep with a partner, choose a room other than the bedroom to practice astral projection. a good time to do it is when no one else is in and make sure no one is going to walk into the room when you're in astral flight.
draw the shades or curtains and rid the room of distracting noises. Any type of interruption could disrupt the state of relaxation you need to achieve.
lie down and relax. position yourself on your back in your chosen room. Close your eyes and try to clear your mind of distracting thoughts. concentrate on your body and how it feels. the goal is to achieve a state of complete mind and body relaxation.
flex your muscles and then loosen them. Start with your toes and work your way up your body, gradually making your way to your head. make sure every muscle is completely relaxed when you are through.
Breathe deeply and exhale completely. Don't hold tension in your chest and shoulders, just relax.
focus your mind on your breathing. Don't get carried away with thoughts of outside worries, and don't get preoccupied yet with the idea of your soul projecting from your body. just let yourself sink into relaxation.
It can be helpful to use a quartz crystal to raise and speed up your vibrations as preparation. gently hold the crystal on your third eye slightly above the centre of your eyebrows with closed eyes and breathing deeply. feel the vibrations and your head clearing; you can envision golden, white, purple or any colour light if you like. during the meditation and astral travelling you can hold the crystal in your hand or place it on your chest or abdomen. the crystal will empower and protect you because of it's high vibrations; negative energies have lower vibrations.
reach a hypnotic state. This hypnotic state is normally known as the hypnagogic state. Let your body and mind approach sleep, but don't completely lose consciousness. being at the edge of wakefulness and sleep, a hypnotic state, is necessary for astral projection to occur. reach this state using the following method:
Keeping your eyes closed, let your mind wander to a part of your body, such as your hand, foot or a single toe.
focus on the body part until you can visualize it perfectly, even with your eyes closed. continue focusing until all other thoughts fall away.
use your mind to flex your body part, but do not physically move it. Visualize your toes curling and uncurling, or your fingers clenching and unclenching, until it seems as though they are physically moving.
broaden your focus to the rest of your body. move your legs, your arms, and your head using only your mind. keep your focus steady until you're able to move your whole body in your mind alone.
enter into a state of vibration. many report feeling vibrations, which come in waves at different frequencies, as the soul prepares to leave the body. don't be afraid of the vibrations, since the presence of fear might cause you to leave your meditative state; instead, succumb to the vibrations as your soul prepares to leave your body.
use your mind to move your soul from your body. imagine in your mind the room in which you are lying. move your body in your mind to stand up. Look around yourself. get up off the bed and walk across the room, then turn around and look at your body on the bed.
Your obe is successful if you feel as though you are gazing upon your body from across the room, and that your conscious self is now separate from your body.
it takes a lot of practice to get to this point for some people, though for others it comes as naturally as breathing. either way it is possible for everyone if it is desired and practised enough! if you have trouble completely lifting your soul from your body, try lifting just a hand or a leg at first. Keep practising until you're able to move across the room.
return to your body. your soul always remains connected to your body with an invisible force, sometimes referred to as a "silver cord." let the force guide your soul back to your body. re-enter your body. move your fingers and toes - physically, not just in your mind - and let yourself regain full consciousness.
confirm that you are projecting your soul from your body. once you have mastered the act of projecting your soul from your body in the same room, you will want to confirm that you were indeed in two separate planes.
next time you practice the astral projection, don't turn around to look at your body. Instead, leave the room and walk into another room in the house.
examine an object in the other room, something that you had never noticed before in the physical sense. make a mental note of its color, shape and size, paying attention to as many details as possible.
return to your body. physically go into the room you previously projected yourself into. Walk to the article you examined during the astral travel. Can you confirm the details you noted when you explored the object with your mind?
Astral Proj for Beginners