I found an article that really detailed techniques for astral projection. There are four methods provided and all of them aren't too difficult to follow. Do check them out.
Four Techniques For Astral Projection By Donald Kraig

There are two techniques which are frequently called Astral Projection . The first one is frequently mistaken for Astral Projection but is nothing of the kind. It is actually Mental Projection . In Mental Projection you send your mind and senses away from your body by force of will. You still will retain your consciousness and some sense awareness in your physical body. Another name for this is bi-locationality.
In true Astral Projection the consciousness almost totally leaves the physical and joins the Astral Double. The physical body appears to be sleeping or in a coma…If you would like to try some…methods for projecting your Astral Body and traveling on the Astral Plane , here are some good ones. Remember, however, to always perform the LBRP [Lesser Banishing Ritual of the Pentagram. Other banishing rituals may also be used.]… before doing any projection. This cannot be overemphasized.






