Any tips I should take into account before making my first famous independent film ever?

Well I have no idea where you live but making it big in filmmaking is pretty hard. You’re getting a bit ahead of yourself with the whole getting it into cinema thing. I have a friend who works in the film industry, he worked on movies like Pacific Rim. I cannot for the life of me remember what position he is in. How he got started however, was getting in the film guilds (he knew people though) and from there he worked his way up. What he does, however, is not screen writing but perhaps that might provide some sort of help. I think I would suggest producing the film first. Film it, edit it, finish it. THen, perhaps enter into film contests and film festivals. As well, perhaps provide a download of it or stream on a site for viewers. It’s be a bit overeaching to expect people to pay to watch your film prior. Do not expect to make it to the top real fast, In addition, there are people who get relatively known for their film making posted on Youtube, perhaps that is an option? Anyways, work hard, and good luck.