Stormtrooper...I found this on paper-replika.com. It's a fairly simple build. All the pieces that make the dome are connected on the print out but to make it look good I cut all of them apart glued in strips of paper as backing so the seems would be smoother, and you can get a better curve shape on the dome.
Millennium....Im not quite sure which eye you're talking about, if you mean the large eye with the blue frame around it you may be right its all one piece, I just built the kit as it came out of the printer, I didn't change any of the pieces.
Thanks rysjin, I'm not much on building R2s but when I saw the graffics on this model I coundn't resist. The photo of this model on the kit looks like it was thrown together, I took that as a challenge. I'm mostly into rocket building, but I don't want to be restricted to any single catagory of models, that gets boring, but I do tend to stick to si-fi and space craft stuff.