To address the Higher Beings you must never kneel down; for the act of kneeling down lowers the attitude of the petitioner, and brings him in attunement with the lower worlds of beings; with the material, or even lower. Therefore, the supplicant should stand upright, with arms crosses over the breast and one hand resting lightly on each shoulder. He should looks UP.
Furthermore, he should address his petition silently and mentally; for the spoken word issues from within outwards, and as soon as it is uttered it flows into the material realms of illusion and is lost there. It can then have material results only and, at the worst, they may be dire in the extreme. In order to petition the Divine denizens of the Spiritual Realms, the prayer should be from without inwards; from the material to the spiritual.