Pretty simple.

I made a greyscale image in Photoshop of a raised "dot", basically its just a circular gradient. Since I knew I would be scaling this up anyways in Bryce, why make it any larger than one dot?

I adjusted the "levels" of the image by very slightly cranking up the white in the image, I knew as a bump, this would give the dot more of a flatter top with a slight ridge rather than a perfect half dome. This falls in line with most of the bubble wrap I have seen. (but not all - I actually have seen perfect half dome bubble wrap)

Then I applied it as a bump to a glass material, "Crystal" I think...which is actually the wrong refraction level, but with the bump, it looked kinda correct to me. I scaled it up a little to repeat the bump across the surface, it still looked a little too perfectly "ordered", so I changed the textures Y axis to 45 degrees.

That's it.

Now when I have time, I'll attempt to;
-Dirty it up, and give some of the bumps a popped look.
-Try and duplicate the original mat using only Bryce's DTE.

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