A method I have used often is to apply solder to the pad which will be way too much, so I use a solder wick to remove the excess solder. Then I place the part, hold it down with a wood toothpick and apply heat to each joint. If necessary add a little more solder to provide a nice fillet and strong joint. If you don't have any solder wick you can use finely stranded wire loosely twisted together and dipped in soldering flux.