Finding the right marking tool is so tough! This is already the second time that I’ve made one a terrific tool. I LOVE Sewline Tailor’s Chalk Pencils. They come in a variety of colors: white, blue, pink.
I love that they mark easily on dark fabrics. The line is easy to see and wipes away by rubbing it. Remember to always test a marking tool before you go for it! I got mine at Knit One Smock Too if you’re local.