This was a hard tangle to draw up because it sprawls so much!
Don't feel bound by a two circle, one circle--you can have as many circles as you like! There's no set path. They can meander about the page whereever they want to go.
Please see my next post-Weekly Challenge #12: Something Blue-for the example using this tangle. Sorry for the inconvenience, but I wanted to keep it separate since Laura puts the responses in a slide show.