So here's my next step. I'm now in the process of rusting the roof. Galvanising the roof to a better shade was not too difficult. While I don't have the colours available as demonstrated so effectively elsewhere on the internet, I mixed up some black and titanium white acrylics and got to a reasonable rendition of the same.
Then I started with the stipple process of the roof.
Here, I ran into problems. I've not got oil paints, and the oxide orange paint used in the tutorials are nowhere to be found. (it seems a lot of art supplies are switching to acrylic paints, it is more and more difficult to find proper oil based paints. You can get oil paints that dilute with water , to me that's not oil, but closer to acrylic… Maybe I need some lessons there.
Anyway, I used a burned sienna and a burned umber acrylic to stipple the roof. I followed this with some weathering powders. As acrylics dry very fast, I didn't really get the right textured effect, and most of the powders brushed off. While it served to dull everything a bit, and giving me some more variations, I'm still not too convinced of the effect.
I think there is some more work needed, but am a little stuck. Anyone any pointers?
Rusty roof by
K2K Koos, on Flickr
Rusty roof by
K2K Koos, on Flickr
Koos