Hello, I would recommend buying a what they call a watercolour 'block', which is sheets of watercolour paper glued on the 4 sides. This means you don't have to fanny about stretching paper. I personally love Arches Aquarelle hot press paper, it's smooth and pretty heavy, works great with watercolour. For blending try wetting the paper with water first, then using layers of thinly mixed/watery black over the top of each other. Good luck!