While I do move pianos that I own, I currently don't move pianos for others. I hire professional movers simply for the peace of mind of handling a customer's instrument. However, if you are looking for some tips on moving a piano yourself, here's a great site to check out; it's a little tough to read through, but there's lots of pictures and a short video at the top that helps you get the ins and outs of what to watch for when moving a piano.
Piano Moving Basics
Notes From the Piano Bench
Questions and Answers and updated factoids concerning pianos in the 21st Century.