I usually start with E000, add some shading with E00 then add a bit of R 20 for the cheeks. This is just one simple way but it looks good. If you have Copic Ciao's then all three are available. Hope this helps.
Edit. If you want a real pale skin use E0000 and build on that
Thank you! I've found the E00, but I have yet to locate the E000. I'm eager to try your suggestion.