A little help here...

Ok, ever since I started and then stopped using this site for a while (which was about May or June), I've had quite a few lucid dreams, maybe close to 10. However, I ran into some trouble. One night, I had a dream I was standing in front of the ruins of a Mariott Hotel. This made me realize I was dreaming, so I effortlessly switched the dream to me flying a B-17 bomber over Germany in WWII. However, I felt I was so excited that I could feel my eyelids about to open, despite my vain attempts to keep them shut. So I had to switch the dream to something else that I don't remember anymore. Another time I had this dream I was in a warehouse full of spinning windmills. This is where another problem starts. I found out I was dreaming, but when I tried switching the dream to the B-17s (sorry, I have this feeling that I'm a B-17 pilot from World War II), but when I tried, it didn't work, and the harder I tried I felt like I was struggling to breathe for some reason.

Any help would be appreciated.

I would do somthing creative. Like in that movie jumper were he has a bunch of pictures he can teleport to.
Imagine pulling out a picture from your pocket and teleporting into it.

Thanks! Last night I also had a lucid dream (they are happening very frequently now), but my friends were there, so instead of doing something else I told them about lucid dreaming.