Very nice weathering sir. I read an article somewhere a long time ago that the red circles rarely showed signs of weathering, something about paint differences. The other markings in the link look the have held up much better as well. Still, there are exceptions and I like yours.
Good stuff, I like the ground work. Could you let me know the brand names of the grass and foliage materials you used please? I'm always on the look out for different scenic materials, but can only get most via mail order/internet, so when I see something I can use, a brand name identifies it, rather than having to buy things 'unseen'.