1. Find good colored background

The colors eyes see back, should be in a harmony with the main subject

2. Get good shaped leaves

You don't want the leaves to be ugly, do you?

3. Find lighted place

Autumn colors are bright, so you need light to show them well

4. Do not use flesh unless it it dark

The flesh will make the background darker, so if it is not night time, avoid it

5. Enjoy the autumn colors