Don't forget to test the crayola markers on your fabric first! FWIW, I find with the bulkier quilts it's easier to do in my lap vs a hoop. I do like a hoop if for no other reason it's easier to find where I've last worked but sometimes it's more of a pain than not. If you are normally hand quilter, pick up one of the Bohin pencils with multi-colored leads as well. I think it might be Dritz (but not sure) that has chalk mechanical-type pencils with various colors as well. I've had those work well on most fabrics also.