Hello! My name is Julia.

I want to learn English and hope you'll help me in this!!! If you need learning of   to learn Ukrainian or Russian, I'll share my experience of these languages with pleasure!! Thanks a lot :)

You could also say

If you need to learn russian or english i would love to share my knowledge of these languages with you.

and you could also extend your cliam by supporting it by for e.g.

since i am a native speaker of these two languages.