AZ-Delivery ESP8266-12E Manual page 7

Now you can still make a small position adjustment, by heating the soldered joint, but
be careful: do not heat it for too long, otherwise, the danger of death caused by
overheating will occur.
If the chip is attached to its intended location, we fix it by soldering the opposite
contact.
Firstly, the contact and the pad should be simultaneously heated, and shortly
thereafter, some solder should be added. Please make sure to avoid adding too much
solder. Otherwise, solder bridges will be produced. If that happens, then you can
remove the solder bridge with a de-soldering wire. To do that, simply place the de-
soldering wire on the solder bridge and heat it up with the soldering iron. The de-
soldering wire absorbs the solder. If necessary, repeat several times, or until the desired
result is reached.
This is how the 2 soldered joints look now: