初めまして、皆さん！(I would say 皆さん、初めまして。or only 初めまして。)

こんばんは、皆さん。、私の輪のなまえめ輪はオーブリーイです。どうぞよろしくおねがいします。
私は二十豎四歳です。今日はとてもよいてんきでした。きれ脱他.

*My = わたしの、name = なまえ、24 years old = にじゅうよんさい

We use the particle は after the subject and it's pronounced わ.

When you talk about the weather, the literal translations don't make sense sometimes. So, remembering the whole sentence with the translation would be one of the good ways. 

One more thing, please do not use the kanji which you don't know the meaning and how to read even if the keyboard (your computer) change automatically. 

Good job! Please keep up step by step. I hope this helps you.