Brush straight from the tin. Two thin coats are preferable to one thick coat. The usual thinning ratio is 2 parts paint to 1 part thinner. 14ml tin covers approx. 0.3m² depending on thickness of application.
The Humbrol No.244 RLM 73 Grun Matt Finish Enamel Paint would be perfect for tabletop miniature painting enthusiasts creating dark, realistic green foliage and gnarled tree trunks.