Please, help me to correct mistakes in this text :)

In my opinion, the most significant thing I’ve created in my life until this day is my small studio of street dance. It is situated in a school in Moscow and includes about 15 students. I’m proud of myself for doing this and feel very inspired.
There are a few reasons for this feeling. The major cause is recognizing that I was following my heart and passion for dancing and to learn independently, from scratch. But more importantly is that I started dancing when I was 18 years old with no prior experience. My love for this art is so strong that I started work as a coach to teach others what I know, when I was 21. In addition, I managed to combine studying in Russian State University of Humanities; earning extra money from time to time; participating in various competitions and still spending time with my loved ones. It was a fascinating opportunity for learning to time manage!
Orgainising my studio was a big job. I consider it as a project. It wasn't just teaching. I searched for an institution which work with me, discussed my ideas with potential employers, did advertising etc. and my desire never left me, not for one minute!
Nowadays, thanks to that, I enjoy an interesting life that brings something new to another 15 children. Twice a week their lives fill with new colours, new knowledge and new exchanges. This art creates a new sphere of their lives.
It is a small creation but I’m only 22 and I’m sure that my greatest ideas are still to come. But I’m confident that I will always follow my passion and remain true to my indepence.

(Your English is coming along well but be careful when writing with metaphysical or metaphorical ideas. It is easy to confuse words when trying to communicate complicated ideas in a language that is not your first. Good luck and keep trying.)