Draw an oval for the spider’s body (slightly larger for the abdomen).
Add a smaller oval or circle for the head/thorax connected to the body.
Draw a curved line or small circle at the joint between head and abdomen.
Sketch 8 thin legs: 4 on each side.
Place the first pair of legs near the front, the next pair slightly farther back, and the last pair at the rear.
Make each leg with two segments (a bend in the middle) and taper the ends.
Add small feet at the ends of each leg with short, pointed strokes.
Draw two small circles for eyes on the front of the head/thorax (or lightly shade eye spots).
Add details to the abdomen with light lines or a web-like pattern.
Outline the drawing with darker lines, keeping the legs slightly lighter than the body outline.
Erase unnecessary construction lines.
Add shading: darken the underside of the abdomen and the areas where legs attach.
Optionally add a web by drawing a few concentric circles and connecting radial lines behind the spider.