LED Soldering Tips Picture

The one at the top can be used if you can't get a finer tip.

When using solder tip larger than what is recommended, the best way to make it work is to start by placing the solder tip ABOVE the hole on the lead, get solder to flow on the lead adding some solder to the tip and lead. Then move the tip down to the hole, keeping the tip against the lead, add a little more solder. The solder should be seen going into hole.

If you have a small round blob on top of the hole, try again, and check the top of the board to see if the solder had flowed through the hole.