Just got into this modelling thing. This is my first model (technically, my second, but the first was a mess so i use it as a test kit now) It's a JagdTiger Porsche in stabdard Dark Yellow.




I used the hairspray method to simulate chipped paint off the red primer, but ive seen other artists get much more appealling products with bare steel.
So basically, my question is what else does it need. I'm looking to add dirt and gunk to the wheels and treads, possibly with powdered chalk pastel if anyone has a good technique for that or even a better way they use.
I'd also like some opinions on how to do nice runs, like for rust. Mine didn't turn out as nice as i'd like.
Also, if anyone knows how to do a proper wash, i'd love some info. All the guides ive read on it are extremely brief, and just say use thinner to thin the paint to the consistancy of water, wash it over the model, and clean off the excess. But, i find the thinner just eats through everything ruining the paint job, even futured with Testors dull coat probably because the dull coat being lacquer based aswell.