This isn't letterpress, but it's worth seeing just the same. This gem of a video shows old wallpaper production using classic block printing techniques, capping at the end with a demonstration of flocking. (Sneeze, sneeze, and sneeze all the way home!)
Another thing we find fascinating, and think you might, too. Below is another fascinating video showing women block printing in the 1950s. And if you can't draw, you can always be a modernist.