@67db1784 I never bother with the kapton tape but I'm quick and I've had a lot of practice - in general it's a good idea. 

Drag soldering is the easiest way of doing it if you don't have a fine tip, an excellent soldering iron, steady hands and a good microscope. 

 @d4b81373 At least I've got the first two of that list. 

 @67db1784 I have three out of four and an extreme lack of patience.