I like the look of this particularly in a more plain area of quilt top fabric.
Here's where we are headed.
A little marking ( again I used Frixion Erasable pen by Pilot.) to get started is fine if it helps.. particularly in this example where I was equally dividing an area into 4 triangles.... What goes inside each triangle is really an elongated meander so if it helps you get going, draw the first few lines of your meander. By the third line, you'll have the idea down and can free hand from there on.