I think there's a "look awesome" box in one of the render options. J/K. If you're working with Poser 5, once you get basic textures and lighting down, the next step is playing with the various material nodes, etc, to enhance realism. I now almost never make a render without using properly mapped skin nodes. Also, I almost always use ray-tracing nodes on any metal texture because it makes the reflections look so much better. One of these days I'll start playing with the atmospherics and get good fog and such, too. It's all down to practice, practice, practice.