When I did redwork I used a red pigma micron pen-it is permanent ink that does not run or smear on fabric. It comes in different size widths and I use a very tiny tip. You can buy them at Michael's in the scrapbook section and a lot of quilt shops sell them to. They are also great for writing on labels.
I use a light box, tape my redwork pattern on it, then tape my fabric on top and trace with the red pen. (I use a red pen because it does not show when you are stitching over it with red embroidery floss.) If the fabric moves too much while I am tracing then I will iron it onto freezer paper first to stabilize it.
Hope this helps.