I attempted something like this with the water colors and the Glowforge, but I had way too much confidence in the protective mask that we have and the watercolor leaked all into the edges of the wood:
(It might be cool to not peel away any of the mask and intentionally bleed some colors in, like the left point.)
Do you find that problem with the acrylic?
It sounds like I might want to score the wood a little more deeply too. (by the by, this image was created with the TSP stippling technique that @dwardio shared here)
Edit: Haha… this looks awful in comparison to the fine art shown above.