Jack
Nice of you to take a look and approve of the box design .
When I design a box the wood generally decides the style and the amount of wood I have available .Then I start with a sketch of sorts to get a better picture of what I am shooting for and arrange the material by grain and colour and start cutting and put the box together .
I measure and cut but find that final fitting the pieces works best for me .Most of the time I find that when I look at the box when I think I am done and stand back that there is a little something missing and usually after a day or two it comes to me just a little detail most of the time .
That is my approach and it works for me .

Klaus