You can upload to YouTube or similar, and post link here to video.
However, you are likely to get the same answers, which includes that passing the quality of your film is all subjective to the person(s) watching it.
Before getting to that point, you have to be on top of this:
1) Ask the film festivals where you want to submit your movie to what their specifications are for delivery.
They are likely to ask for a lot more than just the movie, such as who owns the the movie and asserts copyright on it?
Has the movie been cleared for a public showing?
More importantly, has it already been shown in public, in which case a lot of festivals will say thank you, but no thank you.
Has all the 3rd party copyright, such as music, been cleared and registered?
Some may also ask for proof of liability and Errors and Omissions (E&O) insurance.
2) Create a DCP (Digital Cinema Package).
The above list is not even close to be complete of what you have to go through, but it is a good starting point for showing festivals and distributors that you are serious.
There are a number of ways to get around the above, but they will all take time, cost money and/or a share in the earnings of the film.
Hope that this helps get you on the right track.