This is a 10x speed video of the process I use to put one of the layers of that big bear print onto my screen. It's cool watching the image emerge from a screen that big.
I coat the screen in photo emulsion, and then tape to it a printout of the bear image in black on translucent paper. Then the whole thing goes into MCAD's big exposure unit, and the light hardens the photo emulsion on the areas which aren't covered in black. Then I move the screen into this big sink and wash out the emulsion from the unexposed areas, leaving a stencil of the image. The remaining emulsion is solid, while the stencil is open screen, so ink will flow through it when I print.
Since this video I've figured out that it's twice as fast and more fun if I dual-wield the sprayers. I should try to get a video of that, but I might be in the way of the shot.