At first you have to spot the hole in the bladder.
1 - To repair your kite properly you have to clean your bladder with alcohol or an alcohol patch.
2 - Make the doctor around the hole with a marker.
3 - For the repair to be the best possible, choose the size of your patch according to the size of the hole, if it's bigger or smaller.
Paste a patch on the hole.
Arrange with glue if necessary.
4 - Inflate the bladder to his maximum to check if the repair worked well.