I have no experience with worldbuilding. In fact, I was unaware of the discipline until about December 2014 when I found this SE.
I believe I may have a natural talent for it. When I was in high school I would sometimes get ideas of amazing settings for a story. I would spend days wondering what life would be like in these settings and what kind of stories would be interesting there. Essentially, it was world building. I would occasionally write them down. I read them again recently and they reignited my imagination. I hope that one day I might write stories or novels using these worlds I conjured.