Draw a vertical oval shape for the opening.
Draw two curved lines downward from the oval to form the sides.
Connect the bottom of the sides with a slightly curved line.
Add a handle on one side using two curved lines.
Refine the mug shape by smoothing the edges.
Add a rim by drawing a second oval inside the top opening.
Draw a base line or small curve at the bottom if needed.
Add details like a logo, pattern, or steam lines if desired.
Erase any extra sketch lines.
Trace the final outline cleanly.