hello.

somone once said to imagine yourself being sucked into your bed and decide beforehand where you want to end up when you fall out the bottom.

or

this is a more practical approach:
-imagine yourself in a room (eg your kitchen) and spontaniously decide what you want to do but whatever you do do, use all 5 senses. eg pick up an apple feel the texture, smell it, throw it against a wall and hear it smash, then maybe, fly, and feel the wind in your face.
you will find that this may turn into a dream.

this is a technique i am still experimenting with at the moment.

there is a specific part of the brain where all the 5 senses come together, this also happens to be the place were dreams are made.
so i think there is definatly a BIG connection between using all five senses and dreams.

good luck, let me know how it goes