英语书面表达假如你是李华,

Dear, Miss Main,
I am glad to hear that you have come back to China .I am writing to know how have you been recently. If there is anything i can heip you, please don,t hesitate to ask for my help. In addition , I'd like to express my gratitude for your help in my English study, and i have made great progress because your help,
However, i have encountered some difficulties improving my oral English, and i find it difficult to make myself understood.There, i want to turn to you for help.I would appreciate it if you can give me some suggestions.
I am looking forward to you favorable reply.
Thanks again.
Yours , Li Hua.