For starters, I know that it is technically considered a necro-post, but I wanted to contribute something that I've been working on for quite some time. Considering it is the Reach Concept Art thread, I spent quite a while unfolding harnor's Recon concept helmet.
Let me preface this by saying the original model, before it was simplified, is extremely HD, so it is definitely not a model for beginners. When I unfolded it, I did so to try and fit my building approach, while also making it easily understandable for others.
I broke up the unfold into individual sections, so that the helmet could be assembled in "blocks", so to speak. Again, this is how I wanted to approach building this. To the left of the page layout, you will notice images of the helmet highlighted in different areas. These correspond to the section that they are placed next to. Now, without rambling on any further, please find the unfold here:
http://www.4shared.com/zip/rv7zj79D/Halo_Reach_Recon_Concept_Helme.html?
I've begun on the build, and have completed Section A, and again, this model is anything but simple. I hope others enjoy it as much as I'm going to.
-Matt
p.s. - I've put the model into a .zip file, along with all of the sectional highlights, as well as several in-game Recon reference images, and the original Bungie Recon concept art.