Help me add an on/off switch to boost circuit

[Mr. Pickles]

I'd like to add an on/off stomp switch to my BYOC Confidence Booster and box it up to give to my guitarist.
It's a simple circuit with in and out jacks (mono) and a battery clip.

I might also like to add an external pot in place of the blue trim (which would be internal once it's boxed).

[DerHoggz]

That is assuming true bypass with an led.

You probably want to switch the battery off when the input is disconnected. To do this wire the ground to the empty spot on your input jack then another wire from the R or S contact to the board ground.

To replace the trim pot, just find out what the resistance and taper are and replace it with a full sized pot.