One thing I will point out…
In the blogpost I referenced above, I sliced the pattern bars 1/2″ thick then placed them on their “sides” and fired undammed to allow them to spread out. In your case, you would want to layer with the black on the bottom, then layers or clear and dichro. Then, you would slice into the finished size you want. You would not fire the pieces on their sides. In my project, the “viewing angle” of the pattern was from the side, but yours would be from the top.
I doubt what I said just made sense….(she says sheepishly)
Jester’s Baubles Fused Glass Designs