More texture to try

GAUZE 

the top texture here uses gauze. There seems to be a trick to it. The gauze I am using is regular gauze that can be stretched into different shapes and doesn't remain in tiny squares. You have to experiment. You can use cheesecloth too.

You lay dry gauze over dry paper, then with the brush, brush color into it. It's not a thin puddle of water, more intense but not thick. Put a weight on it and let it dry on its own. Below is pictured one result. 

You can try making a wet wash of color then applying the gauze and letting it dry. I'm not always successful with that method, though.

IMPRESSIONS

Below the gauze is a leaf impression. It is simply a wash of color that I've impressed a leaf into while shiny. I put a weight on it and let it dry. Using a leaf that has strong veins in it helps. 

Mostly this is to show that you can impress objects into your paint to get interesting texture. Look around for other objects in your yard, your house, even your refrigerator. (Spinach leaves work)

BLOWING WITH A STRAW

Is just plain kindergarten fun. You just put a wet dot of paint on the paper and blow it with a straw.

Put a dot of another color next to it and blow it. Try to make them cross paths for color change and interest.

These can be wild weeds on the side of a road or just fun texture.