that's okay, I love discussing art xD
I understand what you mean by being scared to loose your original style. I felt like that right before coming to college. But after doing some experimenting, I did notice that my style had changed (though it was a little on purpose since anime style is discouraged here),but as it was changing I noticed that some things stayed or started to be more prominent in my art. And those became my trademarks. Usually they are strong collar bones, straight lines whenever it's possible, and organic lines. It took me a year and a half of experimenting before I noticed these things that defined my style.
So really, I don't think I can encourage experimenting enough. There isn't much to loose and if you don't like something you fried or if it really didn't work out, then you can at least say you've tried and discovered that it wasn't your thing
...wow this turned out into quite a long reply xD