Nice! Thanks for sharing that.
I don’t know if you have encountered it on the forum, but a neat technique for engraving edge lit acrylic is to engrave progressively deeper as you go up, because the lowest engrave tends to ‘shade’ that above it a bit. That results in a more even lighting.
On This Christmas tree I used three different colors, splitting the tree roughly into thirds, with each a different color so I could assign a higher power as the design progressed upward. It doesn’t have to be much, just deeper than the engrave below it.
I had mentioned flooding an engrave with acrylic solvent, the flood to ‘polish’ the engrave gives a third option to a binary effect that gives a different detail.