With all the creativity you have inside you, more will come as you stumble into inspiring events :gj:. Stick to school, learn the basic structural foundation, and DEFINITELY try to get some GOOD feedback. Don't go looking to hear what you want to hear. Having someone pick your story apart is a GOOD thing. Don't go in thinking "psh.. I'd like to see YOU write this.." That will never help you get better.
Everybody has their own form of art. The people I've talked to who are passionate about their work as artists are never happy with the outcome of their work. They feel it can be better.. It's incomplete.. They wish they had more time to work on it.. All these negative thoughts despite so many people enjoying what they created! A good way to practice humility is to try to find certain aspects of your work that you can do better on. Ask for these specific things from your friends and family. It's cool that you posted it here too, as there are several writers on this forum who can give you some good feedback on your art - if you'd like :gj:.