There is no way to skateboard safely. No matter how much you watch and study and do anything else, at some point, you have to get on a board and move. You are basically guaranteed to fall down, over and over, in fact. But that's ok. When you don't have any actual experience and don't know how things are going to go, you're going to fail a lot. You just have to accept it and keep pushing forward. Learn from your failures and don't make the same mistake twice.
The same holds true in writing, of course. No amount of prep will prevent you from failing a lot. You just have to take the bumps and don't give up. That's how you win.