How to draw a magical tail animal with a4 paper?

1. Draw a curve similar to a straight line as the basic tail shape of Pikachu.

2. Add two thinner curves above and below the basic tail, which gradually become thicker with the bending of the tail.

3. Draw a lightning-like curve on the inside of the thin curve in the above figure, indicating the electric longitudinal wave motion.

4. Draw with different brushes and add details, and you can add some flashes to emphasize the effect of electric longitudinal waves.

In short, the tail with deep skin and meat needs to pay attention to bending and details, especially the internal curve of lightning shape, which should be accurately and vividly described.