Congrats on starting your site. And on getting an adsense account.
As to your question. You really need lots and lots of website traffic to really make anything.
1,500 visitors a day really isn't that much at all. Not everyone clicks on ads and some use adblock.
Don't give up just keep at it and in the long run you could really start making money.
For most people there site needs to get around 6,000 to 10,000 daily unique website visitors to really earn money.
That equates to 180,000 visitors with the 10,000 daily visitors mark.