I also want ot earn Bitcoin but I don't know how to create a faucet and I wonder how to earn from it.
It is fairly easy to create a faucet nowadays. There are sites like faucetbox that offers you a script, and there are some step by step tutorials like
https://bitcointalk.org/index.php?topic=886132.0.
You can sell your ad banners to earn some bitcoin if you have a good traffic.
The hard part is even if you create a faucet getting people to come, especially come over and over. I think that you will have a even harder time then referrals to other faucets with trying to create your own and trying to gain traffic.
It would be very much a uphill battle.