Place two curved lines around the cap's rim. Finish the visor with two curved lines. Show a cowlick by the hat using three curved lines. Draw ovals between the mitt's fingers.
Use a five-sided figure drawn in double lines for the patch. Draw a lightning bolt inside it. Form the other arm with a line from the cheek to the mitt. Put stripes on the sleeve, shirt, and pants legs using curved double lines.
Detail the shoes with ovals and curved lines. Add cleats with attached U-shapes and lines around the soles. Use a curved line with jagged parts for the pitcher's mound. Draw a few jagged lines for grass. Crisscross curved lines near the mitt, back, and raised foot to show movement.