[NathanKP]

Don't worry about success of your idea if your primary focus is gaining experience. If you get some success as a side effect then that is a nice bonus, but the more important thing is that you gain experience and practice which makes you a success later on when you are working on getting a real job.

Personally when I was your age I was creating websites. I made a book search engine, and a geoip enhanced amazon affiliate ad system for easily adding affiliate ads to blogs and websites. Both achieved some minor success, although they eventually got banned by Amazon (the book search engine because I was scraping Amazon content, and the ad system because it got adopted by a lot of spammy content farmers because it was a highly effective way to monetize Google traffic, so Amazon blocked my API access).

So the ultimate success of my ideas was minimal, but the experience I gained from those two projects got me a great job at a startup that has led me down a very successful career path so far.