The negative painting technique in watercolour

    This weekend we had our annual watercolour seminar in Pontypool, and as usual we had a very enthusiastic audience. It's always good when lots of questions are forthcoming and people create a real buzz with their obvious excitement about indulging in watercolour painting and learning new techniques. When they can see the techniques being demonstrated close-up on the screen it really fires them up.

    One of the techniques I was questioned about this weekend was that of the negative painting method. In watercolour, because it is a transparent medium and we cannot effectively paint a light colour over a dark one, we need to resort to other ways of working. We can use masking fluid, which reserves the white paper, but can be clumsy at times. Another method is to rub a candle across the paper to form a resist, but this is hopeless if you need intricate detail. A third technique is to paint gouache or acrylic over the dark area, but here the opaque paint can appear intrusive often losing that lovely sense of watercolour transparency and spontaneity.

    The picture shows part of a painting mainly completed out of doors. It reveals a number of negative painting examples: the trunk and branches of the birch tree; the right-hand boulder; where the dead bracken stands out against the dark background; and the edges of the falling and turbulent water. The sole method I have used here for each of these examples is to work round each feature with a darker colour. In the case of the red bracken, this was painted on first, allowed to dry, and then the dark background wash brought down to describe the birch tree, the boulder, the water and of course, the red bracken.

    This techniques is extremely effective and well worth learning. I don't normally put quite so much negative work into one painting, but this was meant as an illustration on how to apply it, and can be seen on my Painting Winter Landscapes DVD, which accompanies the book with the same title. For more information see my website or that of APV Films who produced the film.