The chair above, I slipcovered in very inexpensive cotton duck; and for the chair below I made a slipcover out of white denim found on sale years ago for a couple dollars a yard...
My couch is an old mohair sofa which my mom found and passed on to me. It is sturdy as a rock, and I love it; it is also slipcovered in a patterned denim. These have all been washed many times, and the denim and duckcloth wash and wear great!Most of our furniture is secondhand, so reupholstering or slipcovers are usually a necessity. I love being able to wash slipcovers, so I determined that I would learn to make them myself. This is the book that I found to be most helpful to me... Simple Upholstery & Slipcovers by Carol Parks ~ {check your library or there's a link on my right sidebar}.
I also saw a three-part post on slipcovers over at Sew Mama Sew recently, which would be very helpful. I have never used a paper pattern as shown in the tutorial, but you might find that useful. Some people make a muslin pattern up first; I usually just wing it with my slipcover fabric, and thankfully that has worked for me.
I hope this helps, Kim!
Deb