These are but a sample of the fractal art I have created. Fractal Art can be very tedious and frustrating. I use several fractal generators including Apophysis, Apophysis 7x and JWildfire. They are all open source software applications.
What you are looking at here are called flame fractals. In the simplest form, as I understand it, a fractals is the rendering of an algorithm. A very simple repeating equation.
I enjoy the challenge of understanding the process, but get lost often. That is where the frustration comes in. Most of the time the rendered image needs to be enhanced in some sort of photo editing software. I use Photoshop CC, many people use Gimp.
Art should always challenge the artist.
Mark the challenged.