Konnichiwa

Konnichiwa! watashi wa aegina desu. watashi wa otaku desu... Nihon ga daisuki desu!

Hi Aegina!

Your mistake is really few! Just be careful for after subject. You can use 'no' instead of 'of'. After subjet is 'wa'. And I wrote it down into Hiragana. I hope it going to be your good help. :D

こんにちは！私(わたし)はアジーナです。私はオタクです...日本（にほん）大好き（だいすき）です！

Arigatou!