I’ve found that in terms of area less can be more, while in terms of brightness and saturation you can sometimes really pump it up.

My main rust recipe is sponging gently with foam, starting with brown, then dark brown red, and up through oranges. Very light passes. Streaking fluids from companies like AK can be good if you plan on doing a lot of rust.

If you want a real expert, I’d watch Night Shift and try to adapt some techniques.

https://m.youtube.com/@NightShiftScaleModels

@thatdamnelf @warhammer40k Honestly, as a basing piece, I think the weathering’s fine. Imo it suggests the war’s been going on quite a while there.

@twotonebax
Paint your "underlayers" - as seen here it's bare metal & rust.
Varnish the model and let that dry for 24+ hours.
Then get some hairspray and salt, "prime" the entire model with a thick coat of hairspray; while it's still wet sprinkle salt all over it so the salt sticks to the hairspray. Let dry for an hour.
Paint the model whatever color you want the model to be when done.
Once that's dry using an old toothbrush and hot water, rub away at the salt, it'll dissolve and come loose.