Minor weathering/painting update...
First off, brilliant job with these! I love them, and the weathering looks great.
Second, I wanted to ask if you're familiar with oil washes for weathering, as you specifically mentioned acrylic paint for the weathering job. I started using oil washes a few years ago on larger paint jobs, and I don't think I'll ever go back to purely acrylic weathering.
If you haven't used oil washes, you just need small tubes of black, burnt umber, and similar oil paints from an art store, together with some white spirits/ mineral spirits (there are low-odour artist varieties with little smell, but good ventilation is still your lungs' friend). A little bit of the oil paint mixed with some white spirit forms a thin wash which is great for flooding the dirty recesses of the model. Wipe away the accessible areas with a rag, leaving the oil paint wash in the deepest crevices where dirt gathers. Done with a little care, it looks amazingly realistic. It's quite forgiving, as you can flood and wipe repeatedly, and clean up with cotton buds / tips (depending on your part of the world!).
The big advantage of oil washes is that they give you more working time than acrylics, and don't leave the same gloss finish as acrylics can. They require much more drying time than acrylics (up to 24-48 hours), and you don't want to leave puddles on plastic models, as white spirit can attack some plastics. The small amount in washes, particularly if wiped away, usually poses little risk, however.
