Thanks for the nice comments.
All I did was paint the entire thing flat black then I found some cheap metallic silver and used a flat paint brush and dipped it in the silver then before applying it, just dabbed it into a paper towel and just lightly touched the surface using vertical strokes . The look I was going for was metal corrugated siding with coal dust all over. I think I might go back over it again but this time use a flat grey but using less than the what I did with the metallic silver for the next layer.
Design master colortool spray - flat black
craftsmart silver metallic paint