Est-ce que je parle avec...
I'm speaking in French = Je parle en français.
No, it's not correct. You shall say: It's French speaking. For example, you can say: Quebec, it's a French speaking area/region/province.
I am assuming you want to say "Yes, I am speaking French" in French. In that case, it would be: Oui, je parle français.
English speaking Canadians say "Easter" French speaking Canadians say "Pâques"
Je parle en français.
In French, you would say "your grandmother" as "ta grand-mère" if you are speaking informally, and as "votre grand-mère" if you are speaking formally.
Je suis un raté (a man speaking)Je suis une ratée (a woman speaking)
"Bonjour mademoiselle" IS a French phrase. If you say this, you are speaking French. It means "Good day, miss" in English.
French say leadership.As there is no french word to express the idea.However, it is possible that french-speaking Canadians have translated it.
Je parle français.
luxenburg is the same in french as it is in English. luxenburg is a German speaking country so there is no french translation.
Uncut is "non circoncis" when speaking of male foreskin. It is "version intégrale" when speaking of a movie.