Nice colours.
I think accuracy matters little if you are painting what you like for the pleasure of it and just for you.
Memories of technicolor films with a medieval theme had all sorts of helms and it looks 'right", unless you know.
That said, the crossover between fantasy and medieval is seamless, except with fantasy - you choose what is allowed
Call them medieval and you'll be in the stocks, call them fantasy and it's thumbs up.
Looking forward to seeing more.