Medieval pony stuff is seriously like the best stuff ever. And that banner makes me weak in the knees. If and when I ever continue that terrible fanfiction of mine I'm going to ask permission to use that banner as the basis for an entire noble House.
I swear, this is the first time I've seen armor on a pony that actually looks like effective armor. The armor on the guards in the show would only work as ceremonial armor, (giant gaps everywhere,) and moreover it's showy and easier to animate. Approaching two years now and this is the first time! No helmet is no problem because the detail you've put in just looks amazing.