I'm not sure of a full typeface, but it's very much reminiscent of the Office 2011 icons, by Frog Design.

If you do a google image search for "origami alphabet" you'll find some.

There are also a number of logos that do a similar thing, such as...

Origami letters.

Keep going, be great to see the finished font.

Here's an Illy how-to on the subject:

http://www.thelogomix.com/blog/folded-paper-logo-design-using-illustrato...

This just came up, and might be of interest: http://dribbble.com/shots/456138-Forward

http://fontstruct.com/fontstructions/show/en_origami_v2_1
http://fontstruct.com/fontstructions/show/paperface