Sawing mechanics can be a hurdle to overcome whether one is new to hand sawing or have been sawing for some time. Why? Because proper body mechanics are important to the quality of the resulting cut.
Bob Rozaieski has added an episode to his podcast which addresses body mechanics and overcoming miscuts while using a hand saw.
I highly recommend watching this video. The video, episode #4, can be found here:
http://logancabinetshoppe.weebly.com/podcast.html
Way to go, Bob!
Take care, Mike