Just a general observation but a lot of your images don't look as sharp as they probably could be. Do you focus specifically on the model's eye(s) before re-framing and clicking the shutter? Or maybe you need to review how you sharpen your images within your workflow?
Also check what size your images are before uploading them. Some hosting sites will resize them if they're too large and as a result images can become unsharp. I think Purestorm resizes if the images are more than 760 pixels.