I don’t paint much terrain. I find it a bit boring and I generally do a pretty poor job painting it (I tend to get too much paint on my brush when drybrushing).
This one turned out ok. It is from a range of resin terrain pieces for Void made by i-Kore a loooong time ago. I used a yellow from and old Rackham “Learn to Paint” set and it was awful. I did 5 layers and the coverage was still poor. After than I just threw GW washes at it and used some Vallejo Smoke for rust/dirt.