Last Christmas I was given an Auscision Goods Shed. It's quite a nicely detailed model and comes built, painted ready to place on your layout oh and it's "lightly weathered". For me it was too "lightly weathered".
So I set about rectifying this and weathering it up a little more to my liking for this type of structure.
I used 2 products. The first is a product called Rustall. This is great for getting that random look that rust can get. The second was a product I've had mixed success with, Joes Custom Weathering dyes. In this instance I used the Rustall for a few layers to get the rusty appearance on the shed roof. I then made a very light wash of the weathering dyes using their rust colour. This enhanced the Rustall underneath and has left me with the result below. I also made a wash and lightly weathered the building and a heavier black wash to darken up the timber deck.