I want to improve my fluency in English and I'm looking for a language partner.
I'll be patient with your Portuguese. :)
I'm not learning Portuguese, but here's a tip.
In English, "X" means either "multiplied by" or "kiss".
It doesn't mean "for".
I think you are doing a literal translation from Portuguese.
In English, you should write "Your English for my Portuguese."
Otherwise, your sentence seems to be saying "your English multiplied by my Portuguese" which doesn't make sense.