Wow.
That's super advanced for someone your age. I guess you're like @Some Guy That writes Music,
super talented with years of music in the family and music education from a very young age.
That's super impressive, and clearly not your first composition ever.
There's one thing I think I should point out.
A musical piece doesn't have to be poly-rhythmic, but here I feel that... there's one rhythm going on all the time.
Again, it's a great work for someone your age, but I think that you should keep that in mind.
Also it's important that you have a website, I only made myself a website recently when I realized how important that is.
Publishing on Youtube, on this site, and I guess that on other sites, together with this website of yours, will surely get you very far.
Good luck on your journey.
P.S I think that there's too much triangle in here, but it reminds me of what I composed by the age of... I think 15.
You have so much time to develop, use it.