I have a suggestion: Take a snapshot photo in your own home/apartment/hut and try to make a Poser scene that suplicated the photo as closely as possible with lighting, objects, textures, ambient mess, whatever. Practice it until it looks as perfect as is possible within Poser (i.e. if you are using P4, don't expect to not postwork the mirrors, for instance) Once you can pull this off, you will know the tricks to make any indoor scene look realistic.