How to draw chibi Batman
Add triangles for the ears, and make the feet have a more square shape, also adding the space between the legs.
Add the space where the mouth shows out of the mask, sort of a curved 'm' shape. Also draw the wings or arms by making a curved triangle shape, sort of like a shark's fin.
Next, add an oval on the chest for the bat symbol, and a belt above the legs with two long skinny ovals for belt loops.
Inside the oval, add a small bat symbol. On the wings, add a line to distinguish the front of the cape from the inside of the cape. On the inside of the cape, add a thicker line near the bottom.
Next, add two half circles pointing downwards for the eyes, and two arrow type shapes pointing upwards for the shoes or feet.