Then I use the software Art Studio on my iPad to alter it and turn it into a black and white image with high contrast. For thermofax screens, I've gotten lucky and found a local shop, Fabrications, that makes them so that I don't have to pay for shipping. I just take them a copy of the image and they make the screens for me for a very reasonable charge.
For stencils, I trace the image onto stiff cardstock and cut it out with an X-Acto knife. If it is a stencil I plan to use a few times, I coat it with semi-gloss medium first so that it is a little water proof.
This last time, the image I wanted to use was the root you see above. I needed an image that was too large for a thermofax screen and knew that making a stencil of it would be daunting. But it was the only way I could think of transfering that image in the color and value I wanted. So I decided to get on with it and do it. I had a transparency made of the black and white image, projected it onto freezer paper, traced it, cut it, and ironed it onto the fabric.
|Cutting the stencil|
|freezer paper ironed on|
|my design wall now with the root stencil done|