After seeing so many reactions I just had to look at the trailer. Perhaps it is because I am Dutch, but... come on, there are a lot of good things in it. Even humor

And he is 'just' 17, so give him a break, testosteron all over the place. Oh, dbl, perhaps don't use the 'pro' word just before you are one, it seems to be the red button of quite a lot of people. Tells more about them than you tough.
OK, all the technical things mentioned above are more or less true, but it really isn't that all time low as I expected. It is a parody, there is some kind of plot, color, sound are not really good, but neither extremely bad. Just work to do and things to learn.
And that brings me to my advice:
focus.
You just cannot learn everything in one time. You opened the whole candy box to show off (but hey, you're 17, there are no dateble girls here, so show off somewhere else

) It's a bit too much.
So focus: for you're next project (and stay in short projects to learn), pic one or two topics. For instance for the next take script and decoupage. Don't worry about sound and color. Then when you have masterd that, take sound; then color correction. Or anything else you feel comfortable with.
Most important: have fun
Grtz