One Light Portrait

Aim a Canon Speedlite 320EX into a 60" umbrella and this is the lighting you get. The subject is positioned near a white wall. The close distance to the wall prevents the light from falling off too much - keeping the wall relatively bright.
 
Good portraits do not require a straight-on look from your subject, but good portraits usually need both eyes in the frame. Do not let the subject turn their head far enough for the nose to block an eye. A white reflector was used to bounce some fill light into the picture.