Often painters will face the fear of the first stroke on that large white canvas. What to place there, what image, realistic or abstract, or somewhere in between. It is the same at times for a potter working on the wheel or with a block or slab of clay. Should they create a functional piece, or something sculptural. Years ago, one of my painting professors said sometimes you just have to jump in with some idea where you want to go, but no real plan. There are times that I have done that on canvas, and times when it has happened to me when working with the clay.
One day I had a large slab of clay, and some idea of where I wanted to go. I had just read the Tolkien trilogy and decided to do something based on the theme: Two Towers. this started with the idea of being a fountain, and therefore would have lots of open dish type space. From there I had no idea where it would go.