When you first decide to pick up a brush to start watercolor painting, the choice of art supplies available can be overwhelming and confusing. So here's an art supplies list of what you need for watercolor painting. (Page 1 | Page 2)
Don't get seduced by all the paint colors available. Start with a few essential colors and get to know each looks and mixes. Buy a tube of these colors, plus a palette:
You don't need black for shadows as mixtures of the other colors will give dark colors. Nor white as the paper is used as the white.
It's convenient to have a bit of each paint color squeezed out of the tube onto a palette, ready to be picked up with a brush. Because acrylic paints dry fast, you need a moisture-retaining palette not a traditional wooden one. If you squeeze paint out on an ordinary palette, a lot of it will dry before you've used it.
Quality watercolor brushes are expensive, but if you look after them they'll last for years. You're paying for the way the hairs in the brush hold the paint and spring back to shape. Get a large and medium round brush (that comes to a sharp point for painting detail), say a size 4 and 10, and a large flat brush for painting in large areas of color. (Brush sizes aren't standardized, check the width if it's given.)
Kolinsky sable is considered the ultimate hair for a watercolor brush (Buy Direct).
If you like to sketch before you start painting, use a relatively hard pencil such as a 2H rather than a soft one, to lightly draw on your watercolor paper. A soft pencil risks being too dark, and smudging when you start painting.
You'll need a rigid drawing board or panel to put behind the sheet of paper you're painting on. If you're going to stretch your watercolor paper, it's worth having several boards so you can have several pieces stretched at any one time. Pick one that's larger than you think you might need, as it's very annoying suddenly discovering it's too small.
Gummed Brown Tape
To prevent watercolor paper from buckling as you paint on it, use some gummed brown tape and stretch it on a board.
Watercolor paper comes in three difference finishes: rough, hot-pressed or HP (smooth), and cold-pressed or NOT (semi-smooth). Try all three to see which you prefer.
If you buy watercolor in a block pad (Buy Direct), you don't need to stretch it as it's stuck down at the sides which helps prevent buckling as you paint on it.
Part of learning to paint is to spend time practicing and playing, not aiming to produce a finished painting every single time you pick up a brush. If you do this in a sketchbook rather than on top-quality watercolor paper, you're more likely to experiment. I like using a large, wire-bound sketchbook in my studio, and a Moleskine watercolor sketchbook (Buy Direct) when I'm out and about.
• Best Painting Sketchbooks
You'll need a container with water for both rinsing your brush clean and for thinning the watercolor paint. An empty jam jar will do the trick, though I prefer a plastic container that won't break if I accidentally drop it. You can buy all sorts of containers, including ones with holes along the edges for storing brushes that are drying.