Some people can fly all by themselves without creating an "explanation" as to why they can fly. Other peoples' dreams are slightly more stubborn and even if the person strongly believes they can fly, and expects to soar away from a standing position, sometimes it still might not work. In this case, create a scenario where you "know" you'll be able to fly based on something that "happened before". For instance, you can "remember" that you took a potion that would allow you to fly without impedement. Or, you can "remember" that you had just put a jet pack on, then you can take off. If the jet pack doesn't appear right away, simply make up another excuse for that. For instance, you try to push an imaginary button on your side, where the jetpack should be. You could say something like, "oh, where the heck is that strap?" or wherever you imagine the button to be on, then expect to feel it once you reach over to grab it.

It's easy to fool the dream if you know what to look for, and what to do. It comes easier with experience.

Dreams are all about expectations and visualizations! If you want to fly without the help of a summoned object, or without giving any other explanation to the dream, imagine the force you'll feel as you take off, and do not expect to slow down then fall.

Somtimes, you might just have squat control, which can happen to anyone. In this case, don't get stressed out, and instead try something more low-key.

Good luck.