Here are some films you should watch
Particularly in relation to budget and effective usage of budget
All of these films are legally free to download and watch
Chatter 8m horror film
Beyond The Game 71m doco on the world's best WoW players
Pioneer One 37m X-files-esque story about Mars
Swing It! 63m romantic comedy about Swing Dancing in Australia
those are just some suggestions, like them or hate them, the point is they are out there being watched....which is where you want your script/story to be...out there being watched...