That’s another thing that you can only learn from doing it. Goddard said it best;
"Up to now – since shortly after the Bolshevik Revolution – most movie makers have been assuming that they know how to make movies. Just like a bad writer doesn’t ask himself if he’s really capable of writing a novel – he thinks he knows. If movie makers were building airplanes, there would be an accident every time one took off. But in the movies, these accidents are called Oscars."
basically the best way to see whether or not you can actually do the job well is to do it and look at it objectively. If you suck, then strive to get better or find a new career choice. No one wants to be in a Uwe Boll kind of position.
Maybe, but not necessarily. Sometimes bad to one, is good to another. So you will never know until you make a movie. Tarantino said himself in one of the interviews he showed reservoir dogs script to someone, i think at the a little film type program in sun dance (not really sure), they told him it sucked. Uwe boll is a little extreme also. Look at ed wood still has a cult following and made enjoyable movies, although in his time he sucked. Citzen Kane bombed when it came out and look at it now. If you like doing it, then do it. The whole striving to get better thing is not much either. Yes you can get technically better but everyone has a nack escpecially in art forms like film. So although u may make the film look better and the script better does not mean people are going to like your style. The reason why most movies suck today is because everyone looks for the easy way out. Most people do not like making movies they are more into the money part. Another reason no one wants to be original everyone wants to copy stories, now an influence or a homage is one thing a copy is another. I personally am i huge fan of b movies most would say they suck or are unwatchable but since the good old exploitation movies have turned into shitty dv attempts at making movies, low budget world is pretty shitty right now. The reason, no one wants to put the effort in. Take for instance my friend. I had a friend who is no longer my friend. The kid never made movies had no interest in it. Did not collect movies, was not a movie buff, nothing at all. One day he sees me making a movies. He is a poser type of kid. So he decides that he is going to start making movies. They sucked so bad and were so idiotic that i think my little sister could write better. The main reason he was not doing it because he liked it nor because he was interested. He was doing it mainly for popularity.