Asset Creation: Maya Character Creation - Creating Games with Unity and Maya - page 195

Figure 8.26 Roughing out the nostril.
Why?
Pairs of edges are very important in most all of organic modeling because
it allows for some roundness to a form. Especially at a place like this where
the geometry is making a corner (from the bottom of the nostril to the
side), extruding pairs can greatly speed up the vertex sculpting process.
Step 44: Close up the top of the nose with the Append to Polygon tool
( Figure 8.27 ).
Figure 8.27 Closing up the top of
the nose.