Odd, I do the metal the exact same way, I just use a 45/45/10 mixture of brown ink, black ink, and blue ink. But yeah, it looks good!
As for cloth I don't know what color you want but I follow the same basic steps:
-Darkest possible color of that color, scorched brown, scab red, etc.
-50/50 mix of next color or shade a step up
-75/25 mix of same
-100 color next shade up
~Repeat the above for the next two colors
-Wash with a thinned down brown ink
-Drybush middle most color
I highlight by hand, drybrushing isn't really my style, takes forever but the results are great! I do use that last drybrush though to "Ork" it up.
Hope this helps!