How can I draw a microfigure on paper?
Since you'll be working at a scale you may prefer to use graph paper. You can print your own if you don't have any, this will make it easier. Use a ruler, pencil and a rubber to draw your microfigure. 

A microfigure is roughly 2/7 legs, 2/7 torso and 3/7 head high, It should also be 3 squares wide. You may find the diagram below makes it easier to visualise:



At this stage the most important thing to concentrate on is symmetry. 


  Symmetry is common in nature, human beings and even more so with Lego.
  Bricks wouldn't be as compatible as they are now if they didn't have a
  sense of symmetry.


For now, concentrate on the vertical symmetry (top-to-bottom). In my sketch I've drawn out the three boxes first and added a few rough outlines within the guidelines. These guidelines can be erased later when you have finished.



If you can draw Microfigures, you can draw Minifigures. All it takes is a change of scale.