actually you are getting the hang of poser faster than I ever did when I started....I think the above comments are valid, if you do not have Bryce that is no real problem, you should be able to get your backgrounds matched up with a few 2d techniques...you can "paint" on light effects on layers and blur them or overlay them or screen them so the illusion of light is created...also color is very important in post work. you are not necessarily looking to create "realism" you are trying to get your mind to react as if it were real....there is a difference....I usually keep working on an image until something changes...it is a transforming process....also pay attention to pose, the slight signs of gravity, the hands the lean of the body...all communicate....but again this is a very good start!