I decided to combine sheer synthetic and cotton thread, using the thread as a resist as I melted the synthetic sheer with a heat gun.
then I painted it in a few areas to increase the contrast when I overlaid the sheer on top.
the sheer was stitched separately with no backing, just the material and thread.
then I cut off the edges with a heat tool.
the dark areas in this detail are where the sheer has been burned away.
Land of Ice and Fog, 48x32"