First, start by sketching the basic shape of the mouse body, which should be roughly oval in shape. Pay attention to proportions - the head should be about one-third the size of the body, and the ears should be proportionally smaller. Next, add some guidelines to help you place the features correctly. For the eyes, use a small circle for the iris and add a tiny pupils using a dot. Don't forget to add eyelids and eyebrows - these can be simple lines or shapes to give your mouse some personality. To draw the nose, create a small triangle that tapers slightly towards the bottom. The mouth is usually a simple line or curve, and you can choose whether to include whiskers or not. Once you have the basic shape of the face drawn, add some texture to the fur using short, curved strokes. For the body, use gentle S-curve lines to suggest the shape of the muscles and skin. Finally, add some details like paws, tail, and legs - these can be simple shapes or more detailed drawings depending on your skill level.