Pyramid shape under the head

[kenney]

one is focusing energy.  does it have to be exactly 76 degrees? no. But every bit you change it changes the distance from the apex above or below where the spiraling energy meets together and then diffuses again. If the shape is not PERFECT to itself i.e. each face congruent and regular it will not work appropriately. What you are constructing is one half of an octahedron and any of the platonic solids built as models will give various affects. A cone of thick cardboard will project a flow of energy like a fan would blow air but it is not focusing and diffusing energy just moving it around, this is that breeze you feel in a huge grain silo when there is no actual breeze.

so depending upon the size and proportions you chose, the proper placement may be under the pillow, the bed, the house.  being under it has purpose as well that you may find useful or you may not be sensitized to what you're looking for yet.