I use stencils with the washable markers (crayola or craZart)....test first to ensure they wash out....have never had one that didn't, but I still test....it does take practice, but it is so much easier than the paper because I can see exactly where I have to sew next, with the paper backtracking can be difficult....the only tip for following the lines is keeping the needle going steady and moving the fabric sandwich at a consistent speed, just like stippling....try not to stop unless you are at a straight line or point as it is difficult to regain the movement/flow in the middle of a curve.