How do you flatten a crochet circle?

How do I stop my crochet circle from curling?

When the corners of your crochet project are starting to curl and just won’t lie flat, you may need to try adjusting your tension. Stitches that are worked too tightly together result in a stiff fabric, which often causes the corners to curl in. To fix this problem, try stretching the fabric.

THIS IS FUN:  What are the four types of crochet hooks?