Can you correct it please?

I'm originally from Russian. For at the moment I do my studies in the (...)

I did 2 years of studies in my home country in at the State University at the faculty of foreign languages. So I have a good level of English under my belt.

Just how I would phrase it, is how I changed it, but there are many different ways of saying the same thing.

Corrections in red.  Stylistic suggestions in  blue.

Can you correct it please?

I'm originally from Russia/I'm Russian by origin/I'm a native Russian.  At the moment, I'm doing my studies in the (...)

I did two years of studies in my country at the State University, in the faculty of foreign languages. So I have a good level of English.

I'm not sure what you meant by "I'm originally Russian."  This would suggest that you are now a citizen of another country.

"I'm originally from Russia."  This suggests that you've moved to another country.

"I'm Russian by origin" or "I'm a native Russian." These mean that you are Russian by birth.