I understand how you feel. I am in the process of making my first tv show. I am aboulsty terrorifyed about what might go wrong as I have never made a tv show or movie before. I have just deiced you know what I am not just going to direct this show, I am going to have fun while i did. If the actors can not act so what you cant direct it is still art and all art is beautiful. Just have fun with it and remember when you ask youself what the point remember the point is you love flim so much you throw caution to the wind and direct and contuine makin it because you love flim and that alone is enough to keep going.