I bought some new watercolour paints and have played with them these past few days.
I came up with a few handy tips that have helped me to better understand and work with these colours:
Think CYMK (not RGB)
RGB works for light, not paint. Also forget about that red yellow blue colourwheel you got taught in school. It has its flaws.
Try making a colourwheel with cyan, yellow and magenta.
Nothing wrong with black and white
Some people claim that you should make your colours lighter or darker by mixing the correct pigments or amount of water. If you can do those, great! But no shame in using a black or white paint in your palette.
Also, do remember that shadows generally don't look that black. You can make shadows look more natural by using a darker version of the colour you used for the rest of the object.
Paint dries up lighter
Watercolour paint will dry up lighter than you mixed it, usually by 15-30%
Experiment with this!
Try out your paints when you get new colours or paper
Make a new grid with all your colours, mix them up or just splash them around. I got into the habbit of using the last page of new sketchbook to paint little blobs of each of my paints with their name and numbers listed next to it. This gives you a good insight of how the colour will look once the paint dries. Different papers give different results.
And so do different brands of paint.
You should never ever forget to have fun with this. Even if things go wrong, you can learn something from it. Experiment, have fun and enjoy yourself!
I made Raah! in freestyle watercolour, without first drawing the outlines.
I did use my pen to draw the eyes and mouth though, I couldn't get it to work with paint.
[CYMK]: Cyan Yellow Magenta Black
[RGB]: Red Green Blue