Flying is something almost anybody does in a dream. Flying in a lucid
dream is even better because you are so much more aware of the experience.
For me when flying, one of my main problems is height. Sometimes i find it very difficult to fly as high as i'd want. And when I am able to get higher, my fear steps in and I will be afraid of going too high.
When I was a child I used to make a swimming motion in the air. This didn't really go fast but that was all I could. I only came about a metre above ground level so walking would have been faster.
I remember dreams in which I searched for high buildings to use for taking off, but I would always take a swoop and end up about a metre above the ground.
But gradually I gained hight and also used different techniques.
Everybody has their preferred way of flying.
Experiment in your dreams to find your best way to fly.
The weirdest technique I've used is one I did when I was hooked to a videogame in which you are a squirrel that can fly when you run and then jump in the air. I actually did that in my dream. I ran, jumped, and indeed I flew.
Here are some more tips and techniques to get you airborn:
Flapping your arms
Of course I start with the good old flap-your-arms-technique. This one is quite slow in my experience. Better than airswimming though...
This one is just like regular swimming but now you do it in the air. It isn't really fast though.
Imagine an energy coming from under your feet that pushes you upwards and onwards. You can really go fast with this one.
This one was thaught to me in a dream. It is really effective. Imagine big fins at your feet, like you'd have when scuba diving. Then use the air you're in as though you under water and use your fins to propel yourself forwards and upwards.
Use a vehicle
If you have trouble flying all by yourself, try using a vehicle that will fly, like a flying carpet or a flying broomstick or mount a flying creature
Flying on ether
Someone mailed me that he flies on ether. He imagines flows of ether in the sky on which he floats.
Fly like a bird
Try to transform yourself into a flying animal like an eagle or something mythical like a dragon for another way to experience flight.