Watercolor Technique Tips | Watercolor Pencils Tutorial - How to Draw A Cat Step by Step:-
You can use any drawing board you have. Alternatively, you can recycle the cardboard backing from an old paper pad or inexpensive lightweight foam core board.
The plywood/Masonite boards are also great if you prefer working at an easel. The extra weight will keep your painting from rocking as you paint!
Taping the paper down will also give you a beautiful white border if you paint to the edge.
You would want to make mistakes and corrections on your scratch/drawing paper rather than the more expensive watercolor paper or mixed media paper.
After your are done with drawing a cat sketch, you can transfer it to your fine watercolor paper with graphite paper or a lightbox/window.