By Devan Coggan
Updated September 22, 2015 at 05:38 PM EDT
Mustafa Yalcin/Getty Images

For years, Channing Tatum has been attached to a biopic about the legendary daredevil Evel Knievel, and Darren Aronofsky is reportedly in talks to direct the untitled project for Sony. But Tatum isn’t wasting any more time. He recently began training and shared an Instagram video of himself completing his first-ever jump on the back of a dirt bike.

“Got a lot to learn,” he wrote. “But so much fun. And completely terrifying in a good way.”

The project has been in the works for years, and Tatum has been a longtime fan of the iconic stuntman. “He was so far ahead of his time, that it was just incredible,” Tatum told Jimmy Fallon last year. “We really loved the beginning of his life, the early part of his life, where he was a complete scoundrel.”

A few weeks ago, Tatum posted another picture of himself on the back of a bike, writing that although he’s been riding dirt bikes “for a while,” he just completed a riding course and can now “do it legally.” While his jumps aren’t exactly at Knievel’s level yet, this looks like Tatum’s first step toward getting the biopic, um, off the ground.