One of the things I have learned about silk screens and their many uses is that each technique produces and effect not attainable any other way.
I want to start with a technique that I have found to be very misunderstood by so many people in my workshops. That technique is flour paste resist. Whenever I mention flour paste resist, I hear people groan, "It's so boring". I beg to differ. When you start to scribe into the fine layer of dried paste, tiny bits of paste come off in a very organic way. Also when setting up the screen, tiny voids sometime occur when the paste fails to seal one tiny opening in the weft and weave of the screens. This produces tiny dots of color when the screen is pulled.
Let's start with a silk screen. If you would like to make your own, please check out this free tutorial.
I started out by placing a small piece of waxed paper on my counter with the screen in this position.
I put some white flour in a bowl and added enough water to create a pancake batter consistency. I used a steel whisk and cold water to make it very smooth.
Next I used my squeegee to apply a relatively thin film of paste on the screen. This is a bit more of a challenge than it sounds. Getting just the right thickness may take a few tries. You want coverage but not too thick and not so thin you can see through it. I took a picture of my screen when it was covered and the waxed paper had been carefully remove while it was still wet but the actual screen had strange stains of it that didn't affect the use but would be a distraction. The photo below is the dried screen after scratching in my design with a sharp wooden (bamboo) skewer. You want to scratch hard enough to remove the dried paste but not so hard you damage the screen. When you look at the design you can see the scratchy organic feel of the image.
Believe it or not I used turquoise, chartreuse and purple dye. Was it the lighting?? Anyway, I pulled the screen id various positions including on point (diamond shaped). I really like the organic feel of flour paste resists.