re: Accuracy

Wolf, Something you may wish to consider, if not already doing it.
I always strive to achieve the most accurate and neat results possible, so when I decide to build some thing as a first up project I use some similar timber or short pieces of the same actual timber to make a small prototype.
This effectively allows you to taylor the final result to obtain the finish you are wanting.

For example when setting up tooling I take the time to make a test piece or prototype do whatever the process is and then gauge my results, if its not what I wanted it gets re done! Now this takes some time but in the process ensures the final production run is as wanted.

A practical example was the Curved Fronted Box I made back in 2013.

Have a look at this:

To assist me I made a small section and used it in the steps I needed to do.
begining at the joints then application of veneer and finally to and the the edging.

Some developments on adding the trim

This is not the be all to end all by any means, as I still had chipout with the veneer on the finished item, and like you was not 100% happy with the result.

So whats the test piece do apart from protract the time to make something?
Reduces the risk of unsatisfactory results
Allows a practice run on a similar piece without sacrificing the project and builds confidence.
I does require additional material which if not similar then maching to the same dimensions.