I clash the 2 flash together. Instead of facing the ext towards the subject, I faced it towards the diection of the direct flash. That's why it is underexposed, but it gives me the even light I need. So I'll need Ev+2 to get the correct exposure.
Weird way to do it, but I kinda understand something over the weekend. I'm not going pro, so as long I'm happy with the shot I take, it doesn't matter if it looks bad