Draw a simple oval.
Add 2 equal sized ovals above.
Add 2 smaller ovals as the bunnys pupils.
Add the nose, mouth and teeth. I recommend you make the nose triangular!
Add an arch for the structure of the head.
Add 2 more ovals for the ears!
Add 2 smaller ovals in the ears to give the ears more shape.
Add in whatever background you want, and colour it in!