The human nose is relatively simple. One can easily break it down into shape and form. Even using a simple triangle can be an easy layout. But here I wanted to show various angles and patterns one can use to draw. The key for drawing noses, especially in character design and anime style is to keep the nose simple. Adding to much detail will generally make the nose older, if not uglier looking.
But as you can see the nose can be easily broken into a wedge form. Odd shaped boxed and triangles mostly make up its base geometric form and can be easily smoothed out and simplified to come out rather nicely.