I'm guessing that you just missed some periods and didn't intentionally leave them out.
MetalGear RAY said:
This should be こんにちは.
MetalGear RAY said:
僕 の なまえ が MetalGear RAYです
I think that using わたし here would be better, but I guess it depends on the situation. Instead of が you should use は. So the first sentence would be: わたしの なまえは MetalGearRAYです。 Also, you could just say MetalGear RAYです. Everyone would know that you are talking about yourself.
MetalGear RAY said:
I think そして should be dropped in the second sentence, as well as 私 -- 日本語をならっています。 I put ならう in the present progressive to show that the action is ongoing, or in this case, habitual.
MetalGear RAY said:
If you mean "Japanese is fun," then you should use either 日本語は面白いです or 日本語は楽しいです。 おかしい means "funny" or "strange."
MetalGear RAY said:
難しいです or just 難しい, but never 難しいだ. Adjectives (either true or -i, however you want to call them, but I mean the 形容詞) are never followed by だ.
MetalGear RAY said:
Same as above. Another thing, what are you comparing kanji to here? Japanese?
MetalGear RAY said:
きっちと is a colloquialized きちんと, both of which are only used with する. To say that you want to speak perfect Japanese, I think that 完璧(かんぺき)な日本語が話したいです would be fine. Also, no だ after adjectives -- 話す becomes an adjective when changed to the "want to" form, as do all verbs, which is why the objects of these verbs take が, although they can also take を, with a slightly different nuance. I believe the use of を puts more emphasis on the action, rather than the wanting to, but I'm not sure.