@cruento Technically some rare wood does have a growth pattern called “figuring” that produces diagonal waviness that kinda looks like what you painted. But it’s usually used in fine furniture and musical instruments, not in an outdoor sign usually made of common wood.
It looks like the extreme n-gons in you carved letters is messing up the dirty vertex colors. Hmm…that could be fixed I think but it’d be tricky. I suppose you can just ignore that for this project unless you wanted to hand paint edge highlighting and crevice darkening for each letter 😱
I won’t count it against you to pass on the task. I got you into this mess after all by suggesting to boolean the letters for a carved look 😅