I have a basic question. What type of pencil do you prefer for sketching your scene on neutral primed canvas before painting? I’ve tried many different types with varying results. Oil pencil, light or dark color, china markers, basic graphite, charcoal, carpenter’s pencils, I’ve also used tailor’s fabric pencils (yellow, white, and black). It seems as though Mark talked about this briefly in one of his videos, but I can’t seem to find it again. Which implement affects the oil paint the least? I noticed that a dark brown or black oil pencil or china marker tends to tint my paint as I brush it on. I’m also worried about lifting or cracking of the lines under a finished and fully dried painting. Any advice with your experiences and preferences would be appreciated. Thanks.