The fourth step in any nanoscape is to outline each shape. In Fractured Glass 2, each shape the dominant shape is triangle, but there are some diamond or oddly configured four-sided shapes as well. I used Daniel Smith Indigo for these outlines because it is strong enough to stand up to the colors that it surrounds.
The outlines begin in the upper middle.
After what seems like an eternity but is actually only three or four days, every shape has been corralled and the piece is nearly done.