Berry,
have your checked out the tutorials on pattern making here in The Village ? I think you will find they are about as good as any you will find in a book and if a question comes up, you can type in your question directly to Travis , who made the tutorials and he will be glad to answer any of them for you. They are easy to follow and understand and you can go back to them as often as you like and also go through them at your own speed.
I was never interested in cutting puzzles until I ran across a photo of a friends baby and thought they would probably love to have a puzzle of that photo, so I printed one of, mounted it to a 1/4 inch ply and cut it free hand. I found it very easy to do without a puzzle pattern and as soon as they received it they ask my to make a different one for them. i would suggest that you start with a 5X8 inch photo. Be sure that you have interlocking pieces on each piece you cut. You do not want to have a free floating pieces. I would also suggest that you make your first puzzle with fairly large pieces so you can get the feel of it. I used a small blade like double toothed # 2 blade. Cut slowly and have fun. If it does not work out well for you the first time, you are not our much and then just try it again.
There you go...have fun, don't be afraid of it, every time i do something new, I just consider it a new challenge and a learning experience.
Dick
heppnerguy