Comment est mon francais?

Overall it is good. There are some small errors through the text (for example you would be better to say "Posez moi toutes les questions que vous voulez") - "une question" is feminine, and it is much better to user the verb "poser" rather than "demander" in such a case. You shouldn't say "demander une question." After that at the end you could end with something like "C'est tout ce qui me vient � l'esprit." You are doing very well with your studies though, so keep learning and you will get even better.