Can you use the visage of a spirit in a dream as a gateway?

Hi. This topic relates to a dream I had a while back. In the dream I had an image of some sort of creature appeared, it’s pretty difficult to describe, along with a message that these are spirits usually assigned to chaos magician’s, use them well. I know the message is silly. So can I use the image I have in my mind of the so called spirits - to connect with the enough to perhaps meet them and eventually get a sigil from them?

It’s one already having a sigil . that I can already do, as for not knowing the name of them, nor having a sigil and just an image is a completely different matter.