I've never been lucid to the point where I could control my dreams but I have (without trying) suddenly become aware that I was dreaming. The most memorable time this happened I was dreaming that I standing in front of a huge tornado. I was terrified and then I suddenly realized it was a dream. So I was like, "Okay, cool. I'm going to stay here and watch this." but I couldn't. I kept getting more and more terrified until I suddenly woke up.

But I'll try to follow these tips and see if I can get more control in my dreams. :)