If you have a laser engraver you are set, what you do is:
cut the acrylic piece on the laser, this will give you nice flame polished edges, either cut vinyl or digital print on clear, applied to the second surface of the acrylic. For the backer board, I generally use brushed aluminum finish dibond and paint the edges silver, get some standoff cover heads and put the whole thing together, on fey ou do a few of these you can make one in about an hour.