Depends on the use. For standard basecoating, I use a 2:1 (or 3:1 with Citadel paint) water to paint. For highlighting, it\'s typically a litle more dilute, 4:1. I don\'t use the floor wax concoction except for darklining or washing. I have used Winsor and Newton watercolor retarder and have a tube of acrylic retarder I haven\'t ever used. I have also used Liquitex matte acrylic medium, which is particularly good for taking the shine out of inks. However, since I always coat with dullcote, shine isn\'t typically a problem.
SkyDancer