How is a floorcloth made?

*rough cut the size
*shrink the canvas
*prime
*sand
*prime
*sand
*prime
*sand
*recut canvas to finish size
*Paint base coat
*Paint base coat again
*Usually paint base coat one more time
* Lay in darker or lighter background shades
*Now we finally get to start  the design and calculate layout
*Paint the design
*When happy with the image its time to apply clear coats of sealer
*Apply 5 or 6 coats of clear  waterproof sealant
*Apply a coat of clear water resistant  sealant to the back
*sew on binding to finish edging

As you can see the construction and crafting of a floorcloth is labor intensive.