[From 10$/Pg] Light Compound Light Microscope

After reading textbook Chapter 3 (section Microscopy: The Instruments) and lab manual (section 3 Microscopy & Staining), respond to the discussion prompt:

Your instructor gives you a prepared slide to observe with a light compound light microscope. Discuss the best practices to obtain an image of good quality. The existence of contrast is crucial to view specimens. How would you increase it in the microbiology laboratory?