Questiona about Hekatean witchcraft

Hello I'm new to Hekate and I have some questions . Most traditions I've studied seem to have structure to their spells and rituals for example working with grimoires you cast a circle, use a triangle with a black mirror or incense then call the spirit, give offering, dismissed etc. but I can't seem to find anything like this for Hekatean witchcraft.

So my question is.... Is this form of witchcraft more intuitive? I know there are hymns and prayers that includes epithets. Can you write your own or do you have to follow what the original prayers say? Also do you create your own spells? Or follow the ones from sources like the PGM?

Thanks for your help in advance