英语日记中的错误roving a writing skill ,i will to write a compositio

英语日记中的错误
roving a writing skill ,i will to write a composition in every week.
If you feel free.Please help me to check the Composition .
Thanks for your help .
Nov.23 thursday sunny
Today ,i'm plan to do homework everyday ,my brother will check me .
At first .thanks for brother's support .i will do my best write more beautiful .hoho
In fact ,my mood is heavy,i feel terrible about i meet in this morning ,severl days ago,i had provied a important file to a customer,i have recevied a letter form Our sales in today.she said :"our mouse sales to the customer is wired mouse,why contain dongle ,please explain it ASAP",according to check ,i was Discovered i got the other fellow's file to coustomer .oh ,my dear ,i made a mistake.
At once .i improved it ,exchange the file,and explain to customer and beg his (谅解)understand .and then ,my Supervisor ask me how to prevent it ,a series Things are coming ,everything i do is for a mistake .my careless let me failure.：(
From now on ,i understand completely ,i must do everything check again and again until 100% right ,i hope my supervisor to give me more encourage,Because everybody could make mistake ,me too .
It's all over ,i don't want talk about it any more .
OK ,today i am write it down to remind me and everyone.

Nov.23 Thursday,sunny
Today I made a plan.I will do my homework everyday and my brother will check my work .
First of all,thanks for brother's support .I will be able to do my best to write better.Hoho
In fact ,my mood is heavy,I feel terrible about what happened this morning .The other day ,I gave an important file to a customer.I recevied a letter from Our sales today.she said ,"our mouse sales to the customer is a wired mouse,why did it contain dongle Please explain it ASAP",After double check ,it turned out that I gave t the other fellow's file to the wrong coustomer .Oh oh,my dear ,I made a mistake.
At once .I fixed it .I exchanged the file and I explained to the customer about what had happened.I begged for his (谅解)understanding .Then ,my Supervisor asked me not to make the same mistake.Things happened one after another.Everything I did was wrong .My carelessness led me to such a big trouble.
Now ,I understand very well.I must double check when I finish one thing.Make sure it is 100% right .I hope my supervisor will give me a second chance because everybody makes mistakes ,me too .
It's all over ,I don't want to talk about it any more .
OK ,today I wrote it down to remind me and everyone.
帮你改了好几处地方.你要学会一个句子一个句子写,不要写太长的句字.要学会用句号.你基本能表答你想要表达的意思.继续努力!