What happens next in this paragraph?

How to compare handwriting samples
Ask for samples if you're comparing handwriting for fun.
If you just want to practice comparing handwriting, ask friends or family members to write samples. Have a few people write 2 or 3 notes each, and ask them to mix the notes up before giving them to you.
Then see if you can tell which notes were written by the same person. You could also ask each person for a sample that you know they wrote and try to match the notes to the right person.