The Michigan Courts website offers a guide on how to collect money after winning a small claims judgment. Read their Q&A here: https://www.courts.michigan.gov/siteassets/forms/scao-approved/dci84.pdf

From the document: 

How can I Collect my Money?

There are several ways to collect your money.

1. If the party who lost the lawsuit (called a judgment debtor) has the money and is present at the trial, s/he can pay you (called a judgment creditor) right then.

2. If the judgment debtor does not have the money at that time, the judge can set up a payment schedule. If the judgment debtor is not present at the trial, the court will send a copy of the small claims judgment to the judgment debtor. The judgment will order the judgment debtor to pay you in full within 30 days or to tell you and the court where the judgment debtor works and the location of his/her bank accounts.

3. If the judgment debtor doesn’t pay the judgment as ordered, you can collect your money through proceedings to seize property or to garnish income of the judgment debtor.