A word of advice, this is nothing to jump into. You first want to understand (to the best of your own abilities) these wonderful beings. Not all of them like to just “fuck”. Some want a relationship which may span across a lifetime. Although doing the letter of intent in the 2nd link will help find the “match” for you.
Also, how developed are your psychic abilities? Clairsentience and clairaudience would help tremendously. If you can’t hear them or feel them you’ll either think you failed to contact one or you’ll feel rejected. Either way, that could still happen, but if you’re abilities aren’t being trained, they’ll be no way of knowing for sure (unless you and your spirit lover find another psychic ability that you all can communicate through).