My local RC shop does a soldering service too but to be honest its a good skill to learn and making a loopkey is a great place to start.
Have a read and then have a go at it.
For a while there I was incorporating a loopkey into the anti spark switch as an isolator and it also comes in handy when the switch inevitably fails as they predominantly fail open as in permanently on.
One thing to remember with any kind of new learn is to get the right tools. Get a decent iron and a set of “helping hands”.
This thing
I call mine @Brenternet
because its a proper tool.