Я такое писала для мамы, посольство Канады в Москве выдало визу за неделю этой весной. Напечатала на компе и подписала, выслала курьером вместе с прочими документами.Dear Visa Officer:I would very much appreciate your cooperation in the matter of issuing a visa for my mother, Mrs. ...., to spend holidays with us in period  ....Mrs. .... will stay with me and my family in our house at......  I will be responsible for all expenses related to her stay in Canada.Attached to this letter please find: - Proof of Canadian status: copy of passport etc.- Proof of employment: ....- Copies of three latest pay stabs. {или справку из банка о деньгах}Please do not hesitate to contact us (tel...) if you have any questions.{имя, фамилия}