I learned this technique from the amazing quilter and owner of Jilly Studio at the quilt show in salt lake a great applique trick so I thought I'd share it here...
1. take your pattern and draw it on a piece of FREEZER PAPER (you can buy this at the grocery store next to the aluminum foil) , then iron it between two pieces of freezer paper (3 pieces total), this makes a pattern that can be used over and over again.
2. Iron the shiny side down to the wrong side of your fabric
3. Cut out 1/4" or so around the freezer papered pattern. (if your edges rounded you'll need to clip them a little around the edges so that they flatten down a bit)
4. Spray starch into a bowl and paint the 1/4" fabric that's showing around your pattern.
5. Iron the edges that are wet from the starch into the pattern.
6. pull the freezer paper pattern out, and you have a turned in edge piece ready to applique!