My life. Beginning.

Good day every one.(Hello Everyone  {Sounds more natural - to an American}
I am Svetlana. I am 30 years old. I was born in Kazakhstan in Ust-Kamenogorsk. My Whole entire my childhood I spent in this town.(My entire childhood was spent in this town - sounds better)  I was interested in dancing, so my mum took me in to a dance team, and in at the age of seven I began to dance and had an excellent success. A year later I desided decided to enter in a music school and began to study  fortepiano piano.. But after three years I left a music makingl, and spent more time at school and in a dance team. I changed the school to have more a stronger education- that was why studying began take a lot of time. A few years later my program at school changed and I needed to pass exams on qualification in humanitarian or mathematics skills and then continued studying in a special class. It was thrilling, but I successfully did whole tasks and entered the mathematical class.After I graduated from the school, I went to Russia to get a begin a profession in Tomsk Polytechnic University.

My life: the Beginning.

Good day everyone.
I am Svetlana. I am 30 thirty-years-old. (<--Numbers less than 100 should be written as words.) I was born in Kazakhstan in Ust-Kamenogorsk. My whole childhood was spent in this town. I was interested in dancing, so my mom took enrolled me in a dance team, and in at the age of seven, I began to dance and had an excellent success. A year later, I decided to enter in a music school and began to study playing fortepiano, but after three years, I left a music making and spent more time at school and in on the dance team. I changed the schools to have more receive a stronger education; that was why studying began to take a lot of time. A few years later, my program at school changed, and I needed to pass exams on qualifications in humanitarian or mathematics skills and then continued studying in a special class. It was thrillingly, but I successfully did whole performed entire tasks and entered the mathematics class. After I graduated, the school I went to Russia to get start a profession in at Tomsk Polytechnic University.

Well written, Svetlana! I hope my corrections are helpful. Please let me know if you have any questions =)