With very light washes, I laid down the basic colors. For this, I used Yarka brand
watercolors and Blick Masterstroke purest red sable brushes. Since Vellum absorbs
the paint relatively quickly, the first wash is not going to look pretty or smooth.
Not to worry: the many subsequent layers will fix this problem.
For the mixed media pieces, I draw/paint to the edges, so I don't normally use masking
tape to attach the paper to the drawing board. I use a clip with a padding of paper
underneath to keep it in place. Here, the watercolor washes were thin, and the paper
only buckled very slightly. Once the paint dried, I put the drawing between two pieces
of chipboard and left it overnight. The drawing was nice and flat in the morning.