Step 1: Start by drawing the body by drawing a hook-shaped with the tip pointed upwards and vertical. Make sure it's wider at te end and narrow at the tip.
Step 2: To draw the ring part of the body by drawing a small square at the end of the body.
Step 3: now draw the rest of the body by drawing a wiggly body that ends as a pointy end.
Step 4: Add small parallel lines across the body for detail.
How to Draw a Realistic Worm – Step-by-Step Tutorial