Okay. You got the basic down. I will explain a little more.
Earth is a powerful and unyielding element. When one thinks of earth they think of strong, solid, and firm. In this element, much of the techniques possess those basic properties. However, there is more to earth release simple structures or entities. Earth Release is arguably the most versatile of the five basics. We’ve witnessed earth release manipulate the structural foundation of earth to change it from solid to a liquid (mud or swamps), convert it into sand, graval, manipulate alternative forms of earth like mud or certain metals/metallic like entities. There has also been manipulation of the physical earth itself, changing the structure of the earth, using shape manipulation to reconstruct and mold. There are countless possibilities of how earth can be used. Earth release also doesn’t just adhere to the manipulation of the earth itself. The earth nature within their own body allows them to create manifestations of earth out and around their bodies, essentially creating their own earth.
Edit: ugh, do you have any questions, is there anything you don't understand?