If you've decided to draw a human face, at first you must draw eyes. There is a lesson how to draw lips. But when you draw a portrait, there are no little things. All the features must be drawn correctly including a nose. This lesson will show you how to draw a human nose in pencil step by step.
Noses can be very different. So there are no exact tips how to draw a girl's nose or a nose of a child. You can just draw an academic drawing of the nose. Now I offer you to draw such a variant of the nose.
I hope you don't need any explanation of how to draw these 2 lines (see my example).
Now you should draw the contour of the bridge and wings of the nose. The width of the wings is equal to half the perpendicular line. Remember that everything must be proportional.
It is much easier to draw the nose with such the marking. Now you can see that it's not hard to draw the nose further. Just draw a streamlined shape of the wings. Mark 2 lines from the bridge of the nose and draw the nose tip.
Now just erase extra lines and you'll get a real academic nose. Now you should draw some details. Be ready for correction of your drawing. It is not difficult to draw the nose but a small inaccuracy can make it too bulbous or too thin.
This step and the last one concern lights and shadows. Just draw some shadows using soft pencils. It will make your drawing of a nose volume and more realistic.
When one draws the nose in the end of a lesson, it can be too big or too small. The nose and eyes are the most important parts of a portrait. You can always correct the chin or lips. But if the eyes and nose are bad-drawn, your drawing a nose won't be realistic.