Hmmm... well this post goes to say that one should act now. As a matter of fact , people have a lot of knowledge but they end up pushing the day to apply the knowledge. I agree with your post although i think there should be room to learn about whatever you are going to do like before starting any business.
Even Warren Buffett says that never invest in anything you dont have close to full knowledge about. Also there should be room for improvement like getting better editing softwares, learning how to do better videos and all. In the long run, you might get better result