I often think that this whole creative process if just one large liminal rite of passage. That is, every time we approach ourselves and the creative process, we are at the threshold of what was and what will be. I think most artists can relate to the idea that often the end result is far different from the original concept, with exceptions of course. Also, there are unknowns in regard to both the past and the future in terms of understanding. Things have a tendency to change and depending on endogenous and exogenous factors, the variables are perhaps limitless.
There is always a sense of mystery for me with art. When I paint, I feel like I am engaged in a religious act of some sort, minus the institutional and political connotations of that word. "Spiritual" might be more politically correct, but in the sense that "relegare" means to "bind fast", that is just it. Every time we engage in a creative act, we bind ourselves fast to the infinite potential in all things as we connect to them both macrocosmically and microcosmically.
So, liminality underlies creativity because like the trickster, we never really know what it is. Even after all the exegeses that go on, there is never a definite understanding of a work of art. Even more so today, with so many styles, derivatives, shapes, forms, concepts in the art world, we might say we swim in a creative sea of liminality, sailing through the threshold of what was and what will be.