I was nervous too the first time I used a water soluble marker but finally got past it and had good luck with one. The one I used was blue and has a fine point on it. I also bought a purple air erasable pen at the same time but like the blue water soluble one better. As I went along I gave a light spray of water to the area and then blotted it with a wash cloth and the markings disappeared. As I became more relaxed I became less vigilant about getting rid of them soon and they all came out when I washed the quilt. I bought some more of the pens when I saw them at a fabric shop so I would always have some on hand I liked them so much. I have not used the Crayola markers. The ones I used were specifically for fabric so I can't comment on the Crayola ones.