So far, so good. What scale are you working in?
You might like to take a look at the Games Workshop range of paints, particularly the washes they make. They are designed for figure painting, and they really are good. You can almost get away with putting base coats on then applying a wash. Human nature is to concentrate on faces when looking at figures, so they can make or break a good miniature. Try a basecoat, a wash, then dry brushing a very delicate highlight on the top. Also consider 'blacklining' - this is a technique where you seperate out different areas of the model by a fine line of black. It's considered old fashioned by the figure-painting community, but personally I like it.
ray