As I mentioned, I work very slowly. One reason for that is that I work on several different pieces at once. Some go nowhere, get flung aside, resurrected later... If you're looking for a linear process, this is not the place to be! Another reason is that I often paint fabric before I stitch it. Inevitably, time passes in waiting for paint or masking medium to dry.
One project I am working on fairly consistently at present is inspired by a photo of mist rising from a series of valleys. It's a painted piece, which will have stitch added later on. So far it looks like this:
I applied Setacolor masking medium with a cheap sponge onto off-white quilter's muslin. When that was dry, I wet the whole surface and painted a wash of runny Setacolour transparent paints over everything.
Now I've masked the light areas again, this time using a folded piece of cardboard as the applicator, to give fairly solid coverage. When I get a chunk of time, I'll paint in some medium values. The masked areas should stay light, but painting fabric is never entirely predictable!