¡Saludos! //¡あいさつ! (You don't have to write "¡" when you translate Spanish into Japanese.) 

みなさん、こんにちは！:D

おげんきですか？ わたし はげんきです。(It isn't need to be put "space" between わたし and は.)

I want to learn Japanese and I hope to help me with that. ^^

さようなら！

¡Hola! There is no need to correct your Japanese, good job! 

Just small, small things. Please enjoy learning! 

¡Mucha suerte!