Wargames Tournaments is a company making various MDF kits. Sometimes they have some insane 'kits under 10£' deals. So way before Brexit I stacked up on a ton of wonderful and cheap kits. Between those kits was a love midieval church kit for cheap.
I decided to upgrade it much as I've upgraded other MDF kits for Guilders - A Life In Shadows
I used thick card to make foundation stones all around the base of the church. And on the tower I mixed different thickness of cardboard.
I went with a bright red for the windows around the church, making it match on the priests and monks I've painted up.