This is not an area I know much about, but I think you should look in the Divination and Communication sections on the forum. I remember seeing something about this awhile back in them. Good luck in your search.
I've found the best way is to get yourself into a calm meditative state, protect yourself by surounding your self in white light and asking for protection. Have your pen poised above your paper and write a question on the paper. Place your pen on the next line and wait (try to keep your mind clear), you should feel inclined to start writing, your hand may become heavy or tingely allow your hand to just move over the paper and allow whatever comes into your head be written without thinking about it.
It may not happen the first time, but I have found that using this method you will get answers to questions in a form that you yourself would not write, a friend of mine always gets poetry (and she's not at all poetic). It becomes easier the more you do it, but ensure that you ask for protection and surround yourself in white light as it is in a sense channeling and you don't want to channel anything bad! You could even direct your question to one of your guides, higher self, angel etc...this way your requesting who you channel not just allowing open slather!! Be sure to thank whoever is was writing for you at the end of your session and ask them to step back, then imagine drawing your aura in close around you to close yourself down. Hope this helps, there are alot of books on the subject, perhaps you should read one before trying. I've just given you the basics.
Good luck.[^]
does anyone here know any good and easy techniques for automatic handwriting??