Here is the same design done at the same time with the same dyes, one on raw silk, and one on silk charmeuse (made with cooked cocoons). You can see that the dyes blended softly on the charmeuse, and the resist lines held well, while on the raw silk, the resist lines did not hold well, and the brush strokes are still clearly visible.
At this stage, the detail on the charmeuse is much sharper.
Fanciful Flower on silk Charmeuse
The next step is add detail with a fabric pen and to steam the pieces.