The hard part is warping the loom. Warping requires planning, measuring and mathematics. When you weave wool, you must starch the thread because wool is flexible and stretches and causes all kind of limpy, saggy, problems. But you starch linen because it won't stretch, is inflexible by its nature, and will break.
I keep saying this because a twelve-yard piece of linen fabric that survives two millenniums is completely miraculous without any graphic depictions. Understand that such a textile, without the graphic, is already miraculous.
Not twelve, Mamzelle, only four yards, it's 14 feet long.