That's a very nice finish. I prefer the colour to the Vallejo Olive Drab (it looks less brown in these photos).
As always, the undercoat has revealed a few gaps and glue blobs. It might be worth dealing with them now.
I would add some stowage because US tanks always have it
I used to use Vallejo and and airbrush for base coating, but effort level of cleaning my airbrush loses over cost of spray!
I gave up airbrushing for that reason. Although I never reached anything like the level of ability of many airbrush users.
