Hajimashite/はじめまして!

Kanji:
はじめまして、私はサラです。私は25歳のスーパーアシスタントをしています。私は特にONE OK ROCK、松下優也とKAT-TUN、音楽を聴くのが大好き。私は現在日本語を勉強しようとしている。日本への旅、来年の準備ができました。私のガイドになりたいがある場合は誰か…私に連絡してください！

Romaji:
Hajimemashite, Sarah desu. Watashi wa niyuugo-sai no supaashisutanto o shiteimasu. Watashi wa tokuni ONE OK ROCK, Matsushita Yuya to KAT-TUN, ongaku o kiku no ga daisuki. Watashi wa genzai nihongo o benjyo shiyou to shiteimasu. Nippon e no tabi, wa reinen no junbi ga dekimashita. Watashi no gaido ni naritaiga aru baai wa… Watashi ni renraku shite kudasai!

English:
Nice to meet you, I'm Sarah. I am a 25 year old supermarket assistant. I love to listen to music, especially ONE OK ROCK, Matsushita Yuya and KAT-TUN. I am currently trying to study Japanese. Ready for my trip next year to Japan . If there somebody who wants to be my guide… Please contact me!

I so hope that its near enough correct. I was sat there for a while trying to work out what to write and then decided on something simple. If there is something wrong, then please point it out to me!!! I don't want to offend anyone