Draw a small oval for the top of the cup
Draw two slightly curved vertical lines downward from the oval
Connect the bottom with a curved line
Add a second oval inside the top for the opening
Draw a handle on one side of the cup
Add a curved line inside the cup for the coffee surface
Draw a saucer beneath the cup if desired
Add simple steam lines above the cup if desired
Outline the drawing neatly
Erase any extra guide lines