I would use posterazor. It's a free program you can get online. Just scan in your page/templates and it will walk you through the process. You can change it to overall size or as a percentage. It has not failed me yet. I use it for all of my paper piecing projects that I want to blow up bigger
http://posterazor.sourceforge.net/
Last edited by Yarn or Fabric; 11-24-2012 at 03:51 AM.
Reason: added link