Pz.Kpfw.IV Ausf.H, GPM 1:25

Beyond words!. Back in my plastic modeling days, I'd scrape rust off of metal, mix it with Clear Flat paint, till it was almost a paste, then paint the part, voila, rusty parts.

How do you do this? :)
 
Work in progress. Stay tuned...:)

Evl0x4.jpg