Alright, so, for this jutsu, it would require some concentration as you did for the earth-sinking one earlier. Begin by channeling your chakra into the earth around you and as you do so, change the chakra within the earth from hard to soft. This will then allow you to dig into the earth.
Once you have done this, I will then send a shadow clone to a different location above the surface. When you come up, tell me where he has gone to.
Remember to try and detect him using your chakra while underground. Become one with the Earth.