Help me please! I wrote a letter for my friend,have i mistakes or no? Thanks you!?

why do you do)) after like every sentence? Grammar Wise i'm is not correct because it comes out to i am and see you can't leave an I lower case so it'd be I'm. The i's you put need to capital like this- I You spelled what wrong in the last sentence. The sentences are kind of short and stubby too. But that's all! : )