How do I say this?

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  • Mandarin 
Apr 17, 2016 12:52
我上大学的时候想要成为新闻工作者。
我小的时候不知道在长大了想要成为什么。
I don't think I have these sentences right at all. Thank you!
When I was in college, I wanted to become a reporter.
When I was little, I didn't know what I wanted to be when I grew up.