[unxdfa]

Trick is to print the schematic out, draw red circle around each "decoupling environment" and then group them on the board like that. Then place the connectors where the mechanical design demands them and move the groups where they need to go. Then do the signal paths, then the power routing, then the ground fill.

Kicad doesn't make that particularly easy but one of the big errors people make is at schematic capture stage where people chuck all the decoupling capacitors in their own sheet or separate net all across the power bus. They belong next to the devices you are decoupling on the schematic.

Canonical good example from the HP 3478A service manual: https://imgur.com/LQiAKtI

[bombela]

I am a total amateur here. But I found it natural to keep a relative spacial coherence in the schematic, and have it somewhat similar on the PCB side.

Though kicad would just dump everything randomly when moving to thr PCB view. As I understand, "packing" should help keeping this spacial grouping.

There is a plugin though[1] that does place the components on the PCB similar as they are placed on the schematic (and this does work with sub-sheet too). This is tremendously helpful starting point.

[1] https://github.com/ian-ross/kicad-plugins

[aaronmdjones]

Isn't C312 the wrong way around?

[kps]

The curve doesn't imply polarization; see C306 on the right.

(I miss resistors that go -v^v^v^-. Why would you use a box? Boxes are for black-box ICs.)

[aaronmdjones]

Ah, right. I'm used to caps being 2 flat lines for unpolarised.