1) When the fabric itself suggests a quilt line... I often use it.... in this case the curvy yellow lines in the lighter yellow/orange fabric. Just go with it!
2) When possible, I will 'visually' tie elements together is some slight way. There are polka dots on the adjacent pink fabric so I drew a few circles on the more plain orange strips, and quilting them in hot pink thread, thus pulling both color and shapes into neighboring areas.
The orange strips called for more quilting so a bubble fill in matching orange thread seemed to work.