One Flash - Many Ways To Photographing

If you have only one flash or you can't use more flashes there is several means to use it and make pictures with good lighting.

The most simple is to raise up your strobe (it only works, if you're shooting in the room or hall with white ceiling). You'll see how soft the light is. But the disadvantage of this method is that you can't use it in big halls or outdoors.

The second way is to use that small equipment. Bouncer card helps you to make a fill light if you're taking photographs outdoor. Just place the speedlight in front of the model and direct it upward on 45 degrees to horizon. 

If you want to use only one flash and use some lighting schemes you can use the this small diffuser or big diffuser like this. Also you need a silver or white reflector (to hold it you must use a tripod or you call an assistant to the shooting time). The reflector is using to make shadows more softer.