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По-русски

Dear Diana. Many happy returns of tyis day! l hope you will have a wondeeul britnday and many happy years to folow. l`m very encolosing a small brithday gift, which l hope you wiil like. l was not at will sure which cilour would you prefer, so l hope that l have been lucky in my choice! With my warmest regards and best wishes for to day and all the day to follow, Yours sincerely.
yazilya.

По-английски

Dear Diana. Many happy returns of tyis day! l hope you will have a wondeeul britnday and many happy years to folow. l'm very encolosing a small brithday gift, which l hope you wiil like. l was not at will sure which cilour would you prefer, so l hope that l have been lucky in my choice! With my warmest regards and best wishes for to day and all the day to follow, Yours sincerely.
yazilya.