Andy, try being bolder with your lights and dark on transparent surface, fewer reflections but more bold. I photoshopped one up for you so you can see what I mean.
Thanks for the tips Yo! That bolder overlay is really effective, I’ll have to try it.
In the meantime, I sketched up my GoPro Hero. The first is the construction underlays and the second the finished sketch. I’ll overlay this later to show more transparency.