Was playing around with a nose after I had been box modelling a head, usually I patch heads but i felt should work on when and why certain processes are done during boxing a head out. Now after a productive series of attempts (still not happy 100% - but getting there) I thought about the area of the face i believe I usually have the most difficulty with - the nostril folds where they connect back onto the face, those little creases I usually have to tweak and work at a lot.

Now I don't usually work on sections alone but I started on this...
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which I think I can modify/simplify wireframe to work on whilst its still a part of a full face/head mesh. it works off the premise of starting with 3 holes to start building the nose.