Let me give you some advice about cutting thin material like 1/8" Baltic Birch ply. You may think that because its thin it's easy to cut. Actually that's not always true. It's very easy to loose control of the blade when cutting with little or no resistance. There are a couple of things you can do to make the cut easier. First turn down the speed of your saw. That will gain you a little extra time to make your turns.
By far the best way to handle thin wood is to stack cut more than one at a time. In this project you can easily stack three or four layers and give you back that resistance against the blade.
DVD and the 2013 update DVD at this link. DVD #1 is $20 and contains over 1,100 patterns. The 2013 update DVD is $7.50 and has another 178 patterns.