Hi Jord001, I am using spectra-tex.. I think that's what the airbrush tutor uses.. He always has his bottle turned around so you can't see the brand, but they look like spectra-tex bottles.. He used a chinagraph pencil over waterbased paint on his Denise Richards painting. I'll go to Michael's and see of they have some water color pencils.. Thanks so much. Maybe I'll just go ahead and order the electric eraser from amazon, and some water color pencils, as well as a china graph pencil.. Chinagraph pencils are wax based.. Seems like it'd make more sense to use a water color pencil wouldn't it..