我的思想文章

“思想” is abstract, use “文章” here will be more suitable. Though I think use this as title is yet not suitable, but I don't know how to fix it more.

早上好，我写着一个课文在写一篇文章，我的词汇量不得这么多，但我试一试写更对一下。

I don't understand what is "更对".

我希望你们会对我能帮助我改正文章中的错误，谢谢早大家。

I didn't understand what this sentence mean, so I rewrite it with the meaning I guess.

有一天，我从窗户向外面看的时候，我看见了一些男孩子玩了在打雪仗，看这个的我感觉这看起来非常有趣，因为在外面有了许多人，还有而且雪有点儿(儿)大。

I think you can make it more natural by move the part after "因为" before "我感觉...".

他们都在高兴地玩儿了(儿)，一个孩子把大的雪投出过球投了出去，砸到了别的孩子的头部，于是我笑了得强壮，笑得很开心。

然后他们都跑到了别的地方。