So first of all take your buttons..
If they are like these common buttons all you have to do is glue them on your studs... But if they have that loop like the other ones above continue reading.
Try to cut of that plastic loop with your scissors.
You'll end up with a button looking like this.
Do this to all of your buttons.
Then taking you nail filer and try to scratch off and make your button surface smooth.
This is how it should look.
After you're done scratching all of your buttons gather them up and put some super glue in the centre.
Take your fastenings...And glue them on...
Put some pressure on them so that they stick on tight enough and then let them dry..
You're done! Hope you enjoyed this tutorial..Comment below for any questions..