For this project you will need a green screen. You can buy one or grab a green material that absorbs light. You will also need flood lamp lights, a camera, software, clothes that match where you really aren't, and props.
To set up first you will need to hang the green screen on a wall. Set the green screen in a room with a great amount of light. Then set up the flood lamp lights if you have some. If you have these shine them only on the green screen not you, Or it will cast shadows. Shadows don't help, they don't help the photo look realistic.
Then after this you will need software. You can go buy one and download it onto your computer. Then take multiple photos of what you want, then choose the best photo and import it onto your computer and change the green screens image.
This step is pretty simple. You just have to think what your going to change the green screen image too and change into what type of clothes you would wear there. Change and get props that you need.
Get your camera ready and action! Take some photos and spice them up with the background. You can get the backgrounds from online or from your own photo's. Then poof your done!