The English signature is written in the lower right corner of the letter. If it is a general letter, it is usually separated from the main body by a line, and then write Best wishes or best regard, and then write an English letter with a blank line. Business letters usually use Sincerely or Yours sincerely. You don't have to write seriously+yours. There is something wrong with grammar. It should be yours seriously.

The conclusion of English letter signature is in the first or second line below the text, starting from the middle right of the letter paper. The first word should be capitalized and a comma should be used at the end of the sentence. Different objects, the conclusion is written in different ways.

when you finish writing a letter, you suddenly think of something you missed. At this time, use p.s. to express it, and then write down the missing words. Make a long story short. Usually at the left of the lines below the signature at the end of the letter, it should be flush with the main text. Note: in formal letters, avoid using postscript.