I adressed a feminine deity to merge with shiva before my attempt to absorb prana from the enviroment around me..
In fact my intent was to unite the feminine with the masculine,and see how it will manifest to my work and my energy body as well...
I used a vision as well,i began the operation and i felt something like drops of water in my face and forehead.. The absorbtion went well(i think),manifesting to the anahata area,but with pains in the chest and back(i know what it means from a medical point of view).. I did some other things to maximize the effect,until i was bursting with energy..
Anyway,the energy work is another story,but had felt those 'drops' in my face in the past as well..
I remembered a quote from Lobsang Rampa describing the sahasrara as a small fountain,or like those fireworks from birthday cakes...
Seems like it matches..
Like having one of those fireworks above your head and some of the sparks are touching your face just before they vanish..
In my case it felt almost like water,and sometimes like small tingling sensations.
falling from the top of the head...
When I started with meditations of my body, initially every time I meditated, from the top of the head there was a flow of some kind of refreshing water into the brain, which was very refreshed, then. In meditations, the body would sometimes produce chemicals with strong positive effect.
It had also described as 'the tingling if the ant'.
It matches as well.. Like having invisible ants walking over your skin.
I had felt it several times..