Great Instructable! You may also want to check out Morphi, a 3D design app for all. www.morphiapp.com In Morphi, you can create 3D models on the iPad by drawing and/or using images or shapes. The app is integrated with Adobe Creative Cloud so you can quickly go from 2D to 3D. You can also export the files for 3D printing, stop motion animation or further remixing in other programs. https://itunes.apple.com/us/app/morphi/id833530351?mt=8 Android, Mac and Windows versions coming soon.