How to re-upholster a chair in 2 weekends: part 1

Recently I've been inspired to upholster everything I see... especially chairs! Why chairs? Well they're versatile; can be used alone, in a group, in any room. They're low commitment; inexpensive, quick to finish. And they're easy to find; estate sales, thrift shops, flea markets. I've done 3 in a row (each project lasting about 2 weekends), and so now that I'm starting to get into a real rhythm I though I'd share my process!