~ Harold Speed The Practice and Science of Drawing
I have lately had the great fortune to converse with quite a few professional artists. The consistent message has been to draw well. See form--really light and its absence--and negative space. Painting is drawing with a brush.
Sometimes when I am painting, applying color, I feel lost. Is this color lighter or darker than this color? How dark is this color in shade? How does the color's hue change in shade? And so I imagine that if I feel confident with the values sans color--just pen and ink, ink wash, graphite--that I'll have some foundation for color.
And of course there is one more advisement... Practice!