Round Face
Balanced with Square Frame. Avoid Small or Round Frames.
Diamond Face
Narrow frames are to be avoided as they enhance the the "narrowness" of your face.
Heart Face
Look at the thin chin and wide forehead. This is considered a heart shape. Balance with Square or Round. Avoid semi-rimless frames with dark colors.
Long face.
Avoid frames that are "long" or frames that are too small. Small frames will make your face appear longer.
Square Face
The straight jawlines and square look. Square frames are to be avoided.
Nose ? Big, small Long or Wide
This is tricky. You must model the frame. There are metal bridges, plastic keyhole bridges, and frame bridges that are either too wide or too small.