OK... Now the 21 links are created, what happens next ?
Well kwutthichai, this is where the magic happens. All of your links have now been sent to my own premium indexing service and will be crawled by Google in the next few hours ready for indexing to give link credit back to your site.
Indexing can take up to 15 days, I spread out the indexing submission over 7 days to look nice and natural (no black hat here)