Last Step is fill your Main PTC with lot off refferal. In Step 4 i alrady mention about promoting your Main PTC, if that step didnt work just like as you want i can tell you my secret step to attract refferal to your Main PTC site.
1st let's attract people to your Main PTC, as i mention before about your Support PTC this is why we make Support PTC to help you gain more refferal for your Main PTC, if you follow Support PTC tutorial you already have some money to buy some PTSU (Paid To Sign Up) buy PTSU credit in Clicksia or Incentria and promote your Main PTC and you can earn refferal.
I can tell you more about Clixsense and Neobux secret, how to build your Main PTC and increase number of refferal. If you join under my refferal list send to me your Main PTC ID and your email and i'll send to you my secret weapon. I buy this Secret from site but i tell you free cause you are my refferal if your Main PTC grow up you can earn moresame like me earn more from you so its win win solution. i'll help you and you help me. And i guaranteed my secret weapon wont make you spend your ral money. Its totaly Free.