First and foremost, create a custom sky that has the lighting behavior you want (especially ambient color & intensisity, sun color, dome color & height) Creating a custom sky will save you headaches later. (I have a sky tutorial at: http://www.bryce4all.com/tutorials.htm ) Next, you don't neccessarily have to create all four walls. The only time a closed room is neccessary is if you have a mirror or other reflective surface that will show the missing wall. Radial lights are your friend. Use them often. Turn down their intensity. Give them some color (Click E and then set the color). Warm yellows, soft blues, soft greens, soft lavandars work well. One light source isn't going to cut it. You will need at least three lights, possibly more. You'll find that your walls will get in the way of selecting other things, so assign family colors to similar things. Doing so will make selecting things like the walls vs the shelf and the tackle box easier. Practice, practice practice. =-)