Any obvious mistakes/improvments on this PCB? Help a noob pls <3
Edit: Added Schematic as comment
Edit2: added an explanation of the different pots/switches underneath the schematic-comment here
https://www.reddit.com/r/diypedals/s/GP3GNY2MfV
Recently posted about this project already, but since I reworked the Layout and all traces and completly finished them, I thought posting new would be more usefull.
It's my attempt to a Tubescreamer-based guitar overdrive pedal and my very first own pcb-design ever. I would highly appreciate some input regarding the pcb so far and if there are obvious improvements possible or mistakes done.
Signal-Traces are 0,5mm/20mil and power-traces (V9+ and V4,5+) are 1mm/40mil. Tried to stick to minimal distance of 1mm/40mil, in some corners etc it's more like 0,6-0,7mm/23-24mil (but only short distance). On the lower left corner are 3 traces very close (0,2mm/8mil) to each other, but that is on purpose to reduce possible loop surface (I hope that is the correct term in english), since that footswitchable "driveboost" mod can tend to oscilate the op-amp in certain settings. I will actually use cables for a fair distance of that part of the signal instead of traces which I twist together for the same reason (twisting helped a lot on my prototype, which is a TS-Kit with cablewired mods)
Ground via gnd-poures on both sides and with the help of several vias. Via's are all 0,6mm holediameter and 1mm in total. I've also placed several GND-Pads on the PCB's just in case and for more flexibility when actually wiring it all together.
Most pads in the lower-middle part are actually 9V-connections for the switching of 2 bi-color LED's. The switch in the upright corner is also involved in switching the led's, but routing that 9v-connections of the switch through the whole board seemed......tricky, so I will actually use wires for that part aswell and have prepared pads for that.
Input/Output and DC Jacks will be wired offboard.
I hope that is all info needed for the more experienced and helpful people here in the sub :) So, roast me please! Did I do good, bad or at least ok'ish? Any obvious mistakes or easy ways for obvious/big improvement? As I said, it's my very first own pcb, so my experience (and knowledge) is fairly low. I really want to make sure that this is a decent board without mistakes before ordering :D