Ewhore some pictures, thats an easy but saturated way.
Try using adsense you can get a lot of money from it ! or $harecash .
You can give Ad-sense a go. You can combine Adsense and CPA on your site if you're experienced with website creation.
Age doesn't matter If you are looking for making money online.Its all about that you have the right knowledge,use the methods wisely,work hard etc.There are many people like your age making a good amount of money with affiliate marketing or Google Adsense.
I strongly suggest looking Into e-whoring. It sounds dirty and stuff but It's actually really easy. I've been doing It for only a few months now and can safely say the profit Is amazing once you know what you're doing.