Well, I could pick a few holes in your gallery picture... Most obvious, you need to tweak how you show metals. In the environment of the picture, they're going to be reflecting a lot of green. I'd say the Romans in your gallery pic are pretty much what I mean by "too Hollywood". Part of that's the design of the clothing; things like the helmet crests. Partly, they just don't look like people who work in the open air. The skin just doesn't have that weathered quality.