Anyone here made their own Lora and can share some experiences?

Hi there, I'm trying to get (more or less) historically accurate images from the early and high middle ages, but none of the models seems to have a grasp of what "maille armor" or "bucket helmets" are and I either get complete garbage or fantasy armor that mostly resembles the early modern period (the stereotypical shining knight armor).

I assume a Lora, trained on images of the armor and weapons I'd like to include, could fix this problem. I found some neat tutorials for making Lora's and think I'll give it a shot.

Do any of you have experience in making these kinds of style Lora's? What should I take care of? I will be manually downloading images that fit my aestethic and manually tag them - how many images should I use? Any input here is highly appreciated.