seeing HI’s requires that your assemblage point, or area of attention, or focus point, or loca, or any other word
is focused in the right places,
to see HI you need to focus innately upon the forehead center while falling asleep, this produces fluid HI which are more abstract and geometrical,
to see dream scenes which can be entered into, one focuses upon third eye (forehead, or the nasal cavity, or between the forehead and the nose, wherever feels natural) while falling asleep, and when in SP or the hypnagogic state, then shifts down to the throat or the brainstem in the middle of the head, at the base of the skull
now of course, you can see HH without doing any of these things at all, just by it happening on its own, but this a way to deliberately do it.