Ors,
Glad you brought this up. I recently picked up a book at REI that helps with this and more. Titled " Don't forget the duct tape- Tips and Tricks for Repairing Outdoor Gear".
This book shows how to hand stitch for different types of repairs, plus a lot more. It is well worth the price of admission and should probably be on the shelf of any self respecting ETSer. I'll post a separate thread on this book.
Good luck, TR