Char B1 Bis diorama - ground, tree and plants

Diorama got some plants. I've used several sets from Polak and some other producers. It needs to be airbrushed to gain real colours and tones. The ground will also be improved several times. Any suggestions?

Char 1B Bis, France 1940, unknown unit

Trumpeter set and my own scratch. First gallery pic:

Char B1 Bis diorama - details, figures and wagon

As you can see, diorama get slowly to finish. A few accessories were painted:

I suppose that figures are ready. Maybe I will dust them a little bit using pigments.

And the horse wagon still on the workbench:

Char B1 Bis diorama

Char 1B Bis got dark wash, stains and light scratches.

The exhaust system was given an extensive makeover with several rusting techniques. To be continued...