Journey To Standing Double Backflip - Slackline

My long journey of world first standing double backflip on the slackline. Started in 2013 and landed it in 2019. I learned quickly how to spin a bad double flip on a trampoline. Tried it few times in 2013 therefore continued next year. Simultaneously improving my single backflip, practicing different techniques on a trampoline and going again for double. When I got my first time feet on it in 2014 - it felt ALMOST! But none of that was even close. Because I got my feet on the line over and over again and i