Melt candy melts. Spread the white onto parchment paper in bunny ear shapes about 2 to 3 inches long. Fill in the middle of the ears with a little bit of the pink candy melts. Chill till set.
Using a small sharp knife, cut little slits into the tops of the sno balls where you want to place the ears. Stick 2 ears into each sno ball.
To make the buttercream: Cream butter till smooth. Add in powdered sugar gradually. Mix till combined. Add in vanilla and milk. Continue to beat for 1 more minute.
Pipe a little round buttercream tail onto the back of each sno ball.