I'm now working on fictional appearances for the minor Houses not featured in the TV series. I'm using a number of references for inspiration, everything from Star Wars and Braveheart to real-life armor, trying to balance it against the TV show aesthetics for a seamless art style.
These are the Oldtown Levies, a low-tier infantry unit of House Hightower (the Reach). As the richest / second richest House in Westeros alongside the Lannisters, they'll have a number of unique uniforms per unit type (e.g. full plate armor for the Knights).