That is an ideal approach Clear, but the issue one often runs into on curved and other surfaces is you do not always have the luxury of being able to run the eight edges I have drawn red arrows pointing too. Trying to run all those edges around a curves surface can be very hard to do without causing creases or changing the curvature of the surface.
I have used two approaches for to solve this. The first one is the one Jay is using. Create an inset and then draw edges from the corner of the outer inset to either side of the corner of the inner inset (see my squiggly drawing labeled 1).
Sometimes the very acute angle causes problems (expecially if the entire mesh is to sparse). In those situations I find method 2 works better. Make two insets, then draw edges on either side of the inner inset perpendicular to the inner and middle edges and then bring those edges to the corner of the outermost inset and delete the middle edge forming the kite. This approach will often yield better results (see the scribble I labeled 2).
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
Last edited by ctbram; 01-11-2011 at 08:19 PM.