Step 1 - Draw a wavy line for the upper part of Pikachu's mouth and a U shape below, draw a curved line inside the moth for the tongue and a small triangle for his nose.
Step 2 - Draw two small circles for the eyes and smaller circles inside for the reflection in his eyes.
Step 3 - Draw the sides of Pikachu's face and two circles for the cheeks. Notice that the left side is actually two curved lines.
Step 4 - Draw the upper part of his head and two ears, one facing up and the other more to the side.
Step 5 - Draw his arms and hands, draw a curved line from the middle of the face and a jagged line at the end for the fingers, now curve the line back below the face.
Step 6 - Draw Pikachu's foot and complete the shape of his body, now draw the other foot on the right bottom.
Step 7 - Draw his tail, start with the line closer to the right hand and come back with a zigzag line until around the middle of the body, now draw a parallel line.
Step 8 - Color you drawing, using a light brown you can add some shading on his tail, the bottom part of his body, under his arms and chin.