How to draw the sausage party, Terry and Altman?

The sausage party, Terry and Altman, painted as follows:

1. Prepare some rulers, drawing paper, red, yellow, blue and black watercolor paints, and a brush. Draw the outline of Triga Altman with red strokes, and extract his head, body, limbs and other details.

2. Use yellow and blue pens to dilute the shapes on the head and body, thus forming the characteristics of Triga Altman.

3. Use a black pen to extract features on the head, body and limbs to increase the three-dimensional sense.

4. Use watercolor pigments to supplement the colors of the head, body, limbs and other parts, so that it can fully present the image of the sausage party, Terry and Altman.