I had a pretty crazy response on Unit 0503. im a little blown away. thanks to everyone for the encouragement!
Just in case anyone wondered how i did this...
#1 Initial Alechemy sketch using pull shapes and a low opacity so that layering occurs.
#2 Taken into photoshop. Grey overlayed in the background and I've begun to explore the shapes from Alchemy. Really dont know what im going to end up with at this stage.
#3 Here I've finished the main greyscale rendering. Now I'm a fan layering and relayering items, so what i've done is grabbed the Alchemy sketch and layered it again in Colour Dodge mode on a lower opacity. Means some of the interesting texture and shapes are still showing through.
#4 Now the fun starts. I've used a Colour Balance adjustment layer to bring in some colour to the piece. Additionally I've used the Distort>Lens Correction filter to bring in some vignetting and some Chromatic Aberration. Chromatic Aberration is a strange effect when i dont tend to use because i think it could be cheesy but sometimes it works nicely. Its most notable towards the edges of the piece near the arms.
#5 I've lowered the opacity of the colour balance and started overlaying bits of colour and decals. I've added some text and a texture across the middle. This is probably one of the most time consuming parts for me because you can litterally go crazy adding stripes and colours etc. The possibilities are near endless. That and the fact that I'm still learning how to do this myself.
#6 I've added a photo a friend took of some really nice looking clouds in the background and I've overlayed a photo of a wall I took in Europe on the rest of the armour. Then i've added some of the vignetting back in because it got a little lost and I've added in the little noise trick that Adhonis uses.
Hope this has been useful for someone...