I'd like to drywall/finish the 'closet' under my stairs, but I'd like to add a light fixture with a switch inside the closet first. Inside this closet already, the back of an outlet box and the back of a light switch box (and wiring between them) are accessible. That switch, which I'll call switch #1, toggles the outlet, which is for the room adjacent to this closet. I want to add a 2nd switch, inside the closet, which toggles a light in the closet, independently of switch #1. Is this possible? (EDIT: Can someone explain and/or show me with a diagram how this might be possible?)
The wires in the circuit are 14/2 with ground.
I have a very basic understanding of circuits and I know that black is generally hot and white is generally neutral, so here is what (I think?) is a more correct representation of how it's already wired: