I can't control much in my lucid dreams either (I like to think it's because I have a supremely intelligent and logical mind. . . j/k . . . I'm not really all conceited. I'm just trying to cover up the fact that I'm rubbish at LDing). I think it comes with practice. The more time you spend dreaming lucidly. . . the easier things should become. If you can't fly right out of the gate don't get too focused on it. Try something else. . . explore . . . experiment. . . and whatever you do don't get frustrated. I discovered that to be a one way ticket back to reality. The more stuff you find that you CAN do. . . the more willing your mind will be to believe you can do even more stuff. . . if that makes any sense.

Welcome to the forum and feel free to ask anyone that ACTUALLY knows what they're talking about (in other words, not me . . . I'm a noob) if you have any questions. Good Luck!