Dear Madam,
I am a textbook writer form Pakistan. I am interested in working for your project as it is interesting and the package is attractive. Moreover, I myself have taste for writing such things. I must make it clear to you that a good writer cannot write on every subject professionally. If the content required is general, I will be able to write on every subject. If else, I mention here the subjects I can write professionally: Language, Linguistics, Phonetics, Phonology, Grammar, Spoken English, ESL/IELTS/ESP, General Science, Philosophy, Indo-Pak History, Practical Guide on MS Office programs, Erotic literature, Social topics, and any topic that needs general views.
I am well aware of the reference styles and can meet strict deadlines. I hope I will provide you the best content.