Step 1: Don't do it like this ..
Step 2: What not to use ..
Small plastic thingy from a pen that fits the little place on the card where the antenna is supposed to be. (it's there on the foil somewhere)
Step 4: Strip the cable
Step 5: How not to make an antenna
Step 6: Buy a connector, don't make one like this
Pull one end of the wire through the plastic-thingy, remove some insulation and test it against the connection so that you're pretty sure it connects with the pin in the middle of the connector.
Glue the wire in place.
Take five, rest while the glue sets and think about what bastards those makers of WiFi-antennas are that can't make stuff you can use. Unless you're using a better glue than I am.
Wrap the foil around the connector, make sure the foil and wire doesn't connect.