Now for finishing up. Pull the remaining cords to tighten up the last knot and closely trim off one side of the excess cord.
Use the lighter to melt the end you just cut. I wait a couple of seconds then use my thumb to press the melted end so that it securely attaches to the surrounding cord. *Be very careful, you can get a nasty burn from the melted cord. You may use a the scissors or a knife to flatten out the melted end if you want to be on the safe side. Just make sure it's a good melt so it holds like a weld. You can now tighten up the other extra end and cut/melt and press it to finish up.
If you get a good melt it'll hold up under everyday use. If you want to untie the lanyard to use the cord, you can break the weld by hard twisting or use a pen to push it from the opposite side to break it. If you just want to avoid using a flame, you might try using a soldering iron or wood burning tool, or even a weatherproof/waterproof glue can be used instead. Or tie an overhand knot and work it close up to the last knot and then trim the excess. It won't look as neat, but it'll hold.
And another finishing option is to tuck the ends into/under the last couple of knots. You can use a pair of hemostats to pull the cord ends(one at a time as it's a tight fit) up under the knots, then trim any excess and tuck to hide the cord ends.
When you're done, you can loop the end onto a keychain, knife, multi-tool, flashlight, etc...
I use the swivel clip to clip onto my belt loop and let the lanyard hang down inside my pocket.
Give it a try and have fun with it.