What I've learned about WC and drawing on cotton

I use 100% cotton and usually dye it first.

Then I spray it with regular spray starch. This somehow

keeps the WC from seeping outside the lines. It's a nice effect - the

seeping color - but I like to make that decision. I iron it dry.

Then I iron freezer paper to the back side of the fabric. This is temporary and just keeps the

cotton flat while I draw/paint. I suspect it also controls the seeping of WC.

I draw the design with a fine point permanent pen. Sharpies are not so

good. I found that older pens make more regular lines with fewer blobs of ink along the line.

I use pan WC with a water brush. Most water brushes have a really good point.

I sometimes dip the brush in a bit of water for more concentrated color. 

I do blot the brush just a little before painting. It takes awhile to 

apply the paint as the fabric just drinks it in.

 Here I sprayed the right side (from your perspective) with

starch but left the left side with no starch. I think you can see the slight

bleeding/seeping on the left side.

For details I use WC pencils. Dip the tip into water then you can transfer the

WC to small details. They work best on very small areas.

Please keep in mind this won't last on cloth exposed to water. Also, I haven't

been using WC for more than a few months on fabric. Not certain how it will

age. I use Daniel Smith WC so the pigments are rich and relatively color fast.

If you can add anything I'd love to learn from you.