If you can figure out how to do a backward stitch, by hand, they’re great for hemming pants. First, using your machine, run a zig-zag along the bottom of the pants. Next, fold and press where you want the hem. Next, start your hand stitching about a quarter inch below the zig zag. (Starting a quarter-inch down keeps shoes from getting caught and pulling the hem out.) You’ll be doing a backward stitch with your needle and thread. (Think of it like how Michael Jackson used to dance backward.)
I learned this backward stitch from an expert dressmaker in Reno, named Audrey. She hemmed men’s dress trousers like this. It makes a nice, flat hem.
Suellen Ocean is the author of many books on diverse topics. Her books are available here: http://www.amazon.com/Suellen-Ocean/e/B001KC7Z78