Wiggly lines inside a piece are always easier than straight. Add some loops and it looks like you planned the quilting. Many people use the washable Crayola markers and draw their patterns on the fabric and just follow the lines. I would test to see if the color you want to use will wash out. When I quilt on my longarm, my theory is, if all the lines are very straight, then I want flowing curves, feathers or spirals to soften the design. Just my 2 cents. Look at some of the pantographs available online. Take those parts you can do and don't do the rest of the design. Or, for each block of strips, put in a cute flower....I find those are easier than almost anything else... or maybe if it's for a boy, a truck, or maybe some outlines of animals. We tend to make the quilting part into the worst, and it can be a lot easier with some thought.