Thanks........
It's a combination of going back and forth many times with a few different products.
View attachment 193934
First is primer, base coat of Tamiya XF - 2 white. A wash of something dirty to fill things in. A drybrush highlight of lighter whites. Chipping with dark grey paint on a sponge or stiple it in with an old messed up brush. Chipping over that with a white highlight if you over did it. Dry brush with steel and silver.
I emphasize the act of going back and forth. You do a dark wash and it looks good in some spots, but overdone in others. Do a highlight to counter act that, but its too bright in some areas. Go back to a wash or chipping to even it out..........but leave some of it to show through.
Oh, and I just added the dust/ dirt pigments from the crew's boots and because its an open top turret vehicle. Looking at the zoomed in pics posted in the thread I think I over did that, so maybe another wash of white

At this point in my modeling life, painting and weathering is the joy. Keep going until your happy.
In my mind this particular vehicle is in Normandy, summer 1944, and was built in late 1942 when M8 production started to get going. So its been around for an awhile.