You may want to elaborate on what you envision as "clean" in the processing of images like this.
The image appears well exposed. Consider next time adding a rim/hair light (in this image, perhaps from camera right) to separate the subject from the background a little more and add some balance to the modeling of the subject. Maybe play around with hitting the backdrop with a flash to provide some interest and pop the subject from the background. The lighting you have here appears to be a large softball-ish source, camera left, with a reflector camera right.
I'm sure others here will provide various tips on retouching and dodging/burning, etc.
kirk