Yes, I am never sure until it is done. Revisions are frequent. Once I start, the only thing I don't dare modify is the essence of the character; my initial purposes and psychological interpretations of the character itself. Inside my mind, I feel the need to inspire the viewers, not always please them, sometimes even disturb them, but always make them think. In the beginning, I find that creating additional eyecandy is trivial. I make some tests until I think its form is more or less done. I try to avoid getting lost in the technical aspects until I near my project's end. There is a lot to say about technical aspects. If one resumes his work over and over again, overworking does not guarantee great results. I believe that if one experiments and develops new techniques, this is more likely to yield a better result.