This is done with a black fine tip sharpie and is intuitive. I am not sure if this is appropriate for "line art". So, if not, someone help me understand better and I will change the picture. I have plenty of this style. This is the kind of art I do when I need to release a lot from my mind. Or when I really want to create art but not feeling particularly intentional about a subject. I have many pieces in this genre and will probably publish a coloring book or two, soon. They look really nice when colored in and actually make good prints for fabric or papers. Not really sure what to call the design as I just go with the flow of my energy field at the time.