About this 3D model

I thought that the first of these ninjabread men was just about the coolest thing ever. So I tried the Custom Cookie-Cutter making program (http://www.thingiverse.com/thing:3433), and made the other two. I plan to try making cookies with them soon, if possible.All wall thicknesses are probably ~1 wall thick. I don't expect great re-usability, but I don't know how to make them thicker yet. I haven't reprinted, as I'm away from the makerbot for a few weeks.