Dry pencil on dry paper
This is the most obvious and simple way of using watercolor pencils:
With a dry pencil apply a layer of pigment on your paper, try not to use too much pressure on your pencil strokes; and then with a wet brush or a brush pen apply water and see how the vibrant colors apear before your eyes.
How to apply water?
This is where you can get creative!
To activate the pigment on the paper you can use a wet brush or a brush pen. This will create a smooth look to the painting.
To create a unique texture you can use your finger or even a sponge.
And finally to wet the pigment evenly you can use a sprayer to create a splatter look