I'd share some info about how I solder.
- I use an Italian soldering iron Ewig with temperature selector. I set it just above 300ºC.
- I wait until the iron is hot enough and in the mean time I put a TINY bity of extra flux over the area we are soldering onto. I mean a very thin layer.
- Then I heat the part to solder and as soon as the flux "burns" ( you'll see the fumes ) I add some solder which will be atracted to the iron tip. Positioning the solder wire and the iron tip in opposite directions (ie facing each other) will result in a "centered" solder union.
- Then it's time to take away the solder and a spilt second after the hot iron. Count to three. Do NOT blow over it and voilà! perfect, shiny result.
Soldering it's not difficult but like anything else needs some instruction, patience and practice.