Haven't done a layout with board mounted pots in a while, so here's the Lovepedal Black Magic. It's a LM386 based distortion that tries to get achieve the "Brown Sound." I added polarity protection and put the LED resistor on the board as well.
This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.