For a child's bedroom, it's important to emphasize light and space. Often, both children and parents can be pretty specific about what they like, resulting in themed spaces. Staging this area means rethinking the entire decorating scheme, stripping it down to the architectural bones and showing it in its best and most neutral light.
If you want to create an interesting space here, imagine a few vignettes: A small desk and lamp help your buyer imagine his or her own children studying and reading. There should be nothing on the floor, even beautiful vintage toys, because this makes the room appear cluttered. Although you'll probably want to avoid too many bright colors, you can take accent pieces and colors further here than anywhere else.
When staging a guest room, include a bed frame and queen-size mattress, a bedside table, a dresser and a small desk or armchair. A bit of art or nature photography, simple window treatments and a neatly folded stack of quilts or towels completes the look.