はじめまして
私 の なまえ は ウィルヘルミナ です
インドネシア の パプア からきました
私 は 19 さい です
どぞ(→どうぞ) よろしく おねがい します.
にほんご わ(→は) おもしろい

Hi. How is your study Japanese? I am Japanese. I think Japanese language is difficult. For example, when we pronounce "は", we can say "ha" and sometimes "wa". にほんご "は" おもしろい is "wa", but we don't use "わ". The sentense means Japanese language is interesting. "は" which is used as "is" is pronounced "wa". It is difficult to explain and understand... I hope you can improve your favorite language!