EDIT - Just saw a video, and just found out that the solder and soldering iron should not touch each other when actually soldering.
That is a lie!
take it from me, if u did that, you would need one hell of a good heat shunt, or you would melt or fly just about every piece of surface mount equipment.
you should clean the area with Flux first,
then you should solder tin the components leads,
then put a drop of solder on the guns tip itself, to be able to transfer heat better,then insert the component into the board or area,
bend the leads how ever needed, then clip the leads to length,
but never after it is soldered! this can create bad connections.
Now solder the piece in place, but do not put to much on, leave a nice rounded teardrop shape once done.
to much can create electric jumps between solder jobs, and/or allow for increased dust build up.
J Standard Soldering, maybe you'v seen this vid