I have seen the demos of wrapping your fibers around a piece of cardboard to visualize combinations in stripes. It is here I can see the importance of Proportion most clearly.
Have you worked with designer rules/tips that worked? Broken the rules?
Are you drawn to certain types of stripes?
Are there any basic design rules for proportion, such as there are in color values?========================
♦ Design to Weave With the Fibonacci Numbers - http://www.craftsy.com/blog/2014/08/designs-for-weaving/
♦ Search Pinterest to see samples - key words 'striped fabrics'