You didn’t understood what was said and the example at the picture in the AppNote I mentioned.
The GND at bottom should be:
- continuous at whole PCB, as you had it before, or
- filled plane under crystal isolated around except having connection to the rest of GND plane just under the crystal tracks going to uC.
I don’t know which solution is better. I asked hopping to hear @teletypeguy opinion.
U2 should have pin 1 down (you can not only rotate symbols but also mirror them). Then GND symbol will naturally be pointing down.
SW1 should be on the left or left down, R2 toward up, and wire goint from it to uC frist going to the right.
Here is schematic of one of my devices.
Even details not visible you should get general conceptions.