Sorry i've looked everywhere and cant see the foamies tutorial for the predator 1 cannon, i'm sure i saw it somewhere.
Also, if there is one for the predator 1 armour aswell, i would be eternally grateful!
One way you can get accurate reference pictures is to screen-grab from the actual film.(in DVD form)
Pick yourself up a free online copy of Screenhunter 5.0 screen capture program.
Play the heck out of your DVD on your computer and start collecting pictures.
There are also a ton of pictures here on the forum. Ya just gotta dig for 'em sometimes!!