Hm. One thing I would say (I've followed your speeds for a long while now) is that you might consider using the smudge tool more often. In my experience, using a very small smudge brush and going over the bark, dirt, grass, rocks in different ways can give it a very "finished" look and as long as you don't overdo it, that's all it'll look like and you won't be stuck having it look artificial and shiny as when you use a larger brush. Also, it doesn't take very long at all.
Hmm. Interesting. I have a knee-jerk negative reaction to the Smudge because of many professional painters cautioning about it, but you're probably right. It could be a good tool to add to my set. I suppose I could try it with some texture-ish brushes for some quick alterations. Thanks, I'll try it soon!
I will say, however, that smudging pencil on paper has a different effect and a different purpose. You wouldn't smudge an airbrush stroke, for instance. It's a necessity for pencils and it works a bit differently. But yes, I'll experiment with it soon. Thanks again for your thoughts.