What ever method you use with any type of pencil or ink, make the mark as light as you can and still see the mark. I try to do that, and sometimes I have to turn the light to just the right spot to see what I've marked. I will also, depending on the exactness of the design, just make intermittent marks to keep me on track, not making a solid line of the design. I learned 20 years ago to use a #2 HB pencil, but I think that was before all these new markers were out on the market. I just made very light marks.