Something that works for me in lucid dreams in the rare occasions that I can't control something, is to make a wish. When you make the wish, envision something that will show you that your wish has been granted, and then after you see the wish granting "event," then you can do what you wished for.

Having trouble with flying. Decide to make a wish, and then imagine that you'll know your wish is granted when you see magic fairy dust appear. There's no right or wrong way to do it, just whatever works for you.

The cool part about this is, once you get in the habit of making wishes during lucids, many more of your non-lucids may have a higher chance of turning lucid. At least, that's how it happened for me. I frequently wish things in my mind while in a non-lucid dream, and when I wish it, it happens, and that's become a dreamsign for me, so my DILDs have increased dramatically.

Just my two cents.

-Rain