This photo does not show the edges of the painting as I didn't want to show the distortions due to the curve of the paper.
My method, when using Arches 640gsm paper, is to do the painting without first wetting the paper. This results in the effect that, whilst I work, the area that I am painting on shrinks a little, and the outside area does not. Once I have completed the work, I wet the reverse side of the paper with demineralised water, which causes an even shrinkage over the entire piece correcting the curves in the paper.
I have worked in this session just in the upper middle of the work.