Starting off slow
俺はハンターです!よろしくね。
would be the natural order.
You are using Kanji and Katakana already? That is really amazing because
some people can write difficult sentences but write only in alphabets,
or only in Hiragana.
It is the best to follow a text book like GENKI, it is available online for free.
I have taught people who was using this book, it was a good one.
Also learning Kanji step by step like we do at elementary schools might be better,
but it's just my opinion.
http://genki.japantimes.co.jp/archives/2460
http://kakijun.jp/main/mainiShougakusei.html
I wish you all the best!