よろしく.

(*In my opinion, saying よろしくおねがいします would be better for the first time.) 

はじぢめまして。. わたしはわニコールです。.

*Japanese has its own period and comma. (。and 、)

Good job! Please enjoy learning. I hope this was helpful. 

よろしく.

はじめまして. わたし は ニコール です。

( "wa" as a particle, you write it は　and pronounce　it  "wa" )