I'm happy to write to you!改为I'm glad to write to you!
We speak English as our second language改为People here speak English as our second language
So my English isn't so 改为To be honest my English isn't so
And I think I can see you and your reindeer fly in the sky one day.中是flying
So every year when Christmas comes最好写every Christmas就好
I always hang Christmas stockings at the beside of my bed应是I always hang Christmas stockings beside my bed.
I don't tell you what I want this year应是I won't tell you what I want this year
imagine you in a hut in the forest,sit next to the reindeer,and read my letter!,中动词要加-ing
I hope hearing from you soon!应是hope to hear
you can live happy应是happily
其他的应该没什么大错误,不错哟,给外国人写信可以提高你的英语水平哟