How to do exposed copper traces in KiCad?

Been using JLCPCB for some synth pcbs and now I have a resistor touch based thing I’ve breadboarded and want to print. What’s the best way to expose the copper traces for manufacturing? Do I just need to draw the traces on the copper layer in KiCad? Is there a best practice for protecting them from oxidation and wear and tear?

Any special settings for the pcb in JLCs order page?