My experience with Hekate is a bit unorthodox.
I worked with her for one major (still ongoing) operation. I was pondering whether I should create a servitor to operate on another continent, and I wanted to endow it with the malefic energies of several of the planets. That meant working during the waning phases of the moon, so I decided that if I was to do it, I should work under the auspices of Hekate.
I thought about it for several days, and then one night she came to me in a dream. It was non-visual and non-auditory, just an overwhelming sense of presence and force, but I knew immediately who it was. Then I felt her messenger animal touch my neck with its muzzle, and I knew that was the go-ahead.
Interestingly, I knew in the dream that her messenger animal was a fox. Later, I looked into foxes in Greek mythology, and discovered that a fox only appears once, and that particular myth is irrelevant to Hekate. That actually gave me a lot of leeway for interpretation, so I interpreted it to mean she thought I was being clever <breaks arm patting self on the back>.
Since the operation is ongoing, I’ll just say that I began each of the planetary rituals with the Orphic Hymn to Hekate and sacrificed a lot of Greek food and wine to her. Fortunately for me, I live at a crossroads, so disposing of it afterwards was pretty easy. I also bought a statuette of her for the rituals, and that sits on my altar next to my servitor’s housing to honor her.