I have worked on Malachite Maze the last week or so and mostly completed the top corner. I like the way Laura Perin uses thread weight to create opaque & transparent areas. For the light areas, we use 2 strands of floss and Waterlilies or Wildflowers. For the heavy areas, we use 4 strands of floss and Watercolours. The dark "line" is Pearl Cotton and will eventually make a square which separates the light & heavy areas. I like the look of this piece!