That's good. Character looks good and the pose is natural too. Clothes don't clip through the skin and limbs are not distorted in the joints. You've overcome those problems, I see.
The background sucks though, but that's beside the point. Backgrounds should be made in some other 3D modeling programs anyway (e.g. Vue, Bryce, Blender, 3D Studio, Terragen or what have you) and then imported to Poser, possibly as a readily rendered picture (environment map) rather than an object depending on whether you intend to just make single pictures or whole continuous animations (or comics with consistent backgrounds). When you start to put it together to make some larger scale work, that's when it gets really difficult and complicated..