This is one of my many doodles.  I enjoy doing these. They can be satisfying when I'm not able to do other kinds of creating. There are a couple ways that I like to use to start. If I have a phrase or a word, I write that down anywhere on the page and in any style. Then I make one continuous squiggle around the words.  If I don't have a phrase then I just do the squiggle.  Then fill in with any design that comes to mind.
I find that the style of my doodles changes with my mood.  The darker the mood the more angular the design. The lighter the mood the more swirly the design.