Thanks for the comments guys.
Hi Philb, the script was done using decal paper, which I got from here:
I just collected a bunch of Astartes quotes and typed them up in MS Word, applying colour and font to suit then printed a whole sheet off. Now I have a selection of quotes in various sizes which should fit on any vehicle I plan to have for my army.
I'm currently working on another 5 assault marines to bring them up to a 10 man squad then it'll be 2 tac squads.
I'll post pics when I have a few more done.