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Practice is a great idea if you've never done any soldering (I should listen to my own advice there). Buy some jump wire and a couple of cheap pots (Jaycar?) and practice on them.
One key thing to remember is "heat the work, not the solder". For example, soldering a wire to a pot lug: place the soldering tip to the lug > allow the lug to heat up (a few seconds max) then touch the solder wire to the lug (not the tip).
Another tip is to make a template (cardboard will do) to hold the pots in the positions they'll be when mounted in the guitar. Then place and secure the template to your workbench/desk etc so you're not chasing the pieces all across your bench.