What Does It Mean? Flash Image Of An Angel

2 or 3 weeks ago after waking up from a nightmare I got a flash image of an illustration drawn on, what looks like, a papyrus. It was an illustration of a male angel. He didn't cover his muscled torso with shirts or scarfs and he wore a knight helmet. He was standing with his angelwings wide open holding a sword with his handpalms, kind of leaning on the sword. The sword was, of course, facing downwards. He also had a plum on his helmet. This image looked a lot like something you could find in ancient books or researches on mythical creatures.

I tried to research what it meant but all I could find was a wikipedia page about an archangel named Michael. Neither did I find articles about having flash images (Eventhough I've only had one) I feel like this flash image is a clue of finding the guidance towards the key of knowledge and a happier life. Of course, I'm not certain and I would like to ask you if this means anything or not. Was it a clue or just imagination? Is it normal? Am I overthinking things? Maybe it's a health thing or a long lost memory?

Anyhow, this experience has intrigued me very much but I don't know if it's enough to consider it psychic or spiritual. You must be wondering why I'm posting this in the first place when I don't even know if it's considered spiritual or psychic. Well, I hoped you could help me answer that question. I've had multiple dreams that came true and such but a flash image is something different. To me such a thing is quite unusual and rather unnatural and strange. Please comment below your thoughts and ideas upon reading this. Thank you for your patience and time!