Its great to be able to draw mice. They make for excellent doodles, ornaments or cartoons on cards, and are fun to add to craft projects. Mice evoke a feeling of home, and, so long as you don't have a real mouse problem in your home, most people have fond feelings toward them. Though we make jokes about ladies screaming in fear at the sight of a mouse, we actually kind of like them (just so long as they live outside).|
Mice can be drawn from the teardrop shapes shown below, but as you progress and practice you may adopt their basic shape to show their shoulders a bit more. Mouse tails are bald, too, and they have four toes on each foot. Their eyes are roughly the size of their nose. Adding a mouse to a drawing of the inside of the a room can add interest to your composition (especially if there's a cat watching), but it may turn off some people... the idea of living with mice is much more romantic than the reality.
Practice how to draw mice here: