Why don't you try finishing up the tutorial? You might've mastered the first step, but nailing down the fundamentals is what's important.

Buy 25 cars in car dealerships

Kill 20 Enemies with Headshots

Find 1 Treasure

Score an Open Play Goal after Timing your Shot Perfectly

Rob five stores in under five minutes.

Obtain ration stamps without raising the alarm.

Finish the story on medium difficulty or higher.

Sell five vehicles to Mike Bruski at the scrapyard.

Finish the Witness level in "Joe's Adventures."

Finish What you started.

Complete Chapter 14.