Draw a small oval for the head
Add a larger oval for the thorax
Draw a long, narrow oval for the abdomen
Sketch two large compound eyes on the head
Add a thin needle-like proboscis extending from the head
Draw two antennae on top of the head
Add six thin legs extending from the thorax
Draw two wings attached to the thorax
Refine the body segments and leg joints
Add small details to the wings and body
Outline the final mosquito shape
Erase unnecessary sketch lines