Soldering isnt that hard once you learn how to do it propely. My first soldering jobs were on my xbox og, gamecube and ps2, and while successfull, in hindsight i did an incredibly poor job. After a while i started getting into modding arcade sticks and i took the time to look up some videos on how to solder properly. Basically you just find some old pcb to train on and make sure you heat both the pad and the wire at the same time where they touch and once both are heated up just press the solder into the joint. Shaky hands become less of a factor because your tip is basically resting in that spot.