Are you hand quilting or machine quilting? There are many different methods and test your marking method on scrap fabric and trying to remove it is best before marking on your quilt.
For hand quilting I use a stencil and white chalk and mark as I go. For straight lines I use painters tape and quilt along the side of it.
For machine quilting I do minimal marking with white chalk and free motion quilt in the designs using the quilt blocks as my guide.