Guys, you are right. It's a craft that takes years to master - I tend to forget that and then get frustrated when it's not working out as I imagined.. Sounds very millennial-ish
It also has a lot to do with the "inner vision" I guess. I had this vague image in my head of what I wanted to do when I ordered it, but then, between the order and the start of the build, I already had 3 other guitars finished (and, for the record, I think they all turned out somewhat cool, at least in my opinion). So a lot of my initial ideas got somewhat blurred and faded away. Also, when it comes to the details.... I know I want a brass pickguard and trussrod cover, and I want to etch it. But what am I going to etch on it? I also knew I wanted the MOP headstock decoration, but WHAT do I want to have? In the end, I settled on something I copied from an existing headstock, but it's a bit random and meaningless. I still haven't got any idea about the "theme" of the guitar, so I think this contributes much to the feeling of frustration with the build.
Also, the fear of polishing through the poly (again), so I'm not sure what to do about the scratches - try to polish it again, and maybe polish through the poly, or leave them and have my eye catch them every time I look at it?
Sometimes, I think I should have just painted it, but then, on the other hand, I don't see any sense in copying a guitar design that can be bought as is at the music store. If I wanted to have the "standard" orange rockabilly Gretsch guitar, I could just purchase a perfectly fine factory made model. But it's going to be just like any other orange Gretsch guitar. So I should just embrace my not perfect but not standard guitar, even if it's not what I first had in mind.