Помогите пожалуйста написать письмо на английском языке другу?

Hello my dear friend Misha! I decided to write a letter just to let you know that I am OK and going to Italy this summer. My sister Kate also goes. Our parents don't mind if you go with us) Just imagine, it will be great to see different pleases, museums, to swim in the sea and play beach ball ! So, if you will go with our family, I will be happy! So, I' ll wait for your answer. Your friend Tom