You'll be needing the following:
- A camera with a Kit lens or any wider lens (18mm or wider).
- Anything you can step on (rock, table, chairs, etc), unless you're really tall.
- A model of course 8D
Adjust your focal length to its widest mode (18mm for my kit lens).
Make yourself higher than the model (step on a chair, etc). Refer to the 2nd photo
Adjust your framing, chibi shots looks better when closer (bigger heads), include the feet to make it look cuter. Of course you can experiment and adjust to what you think looks better.