I am still unable to figure out what is wrong with these sentences. The capitalization and punctuation.

According to the popular book antiquities that was written in 1877, England began observing this holiday as early as 1446.

The festival honored Juno the Goddess of women, and marriage and pan the God nature.

Children like to make their cards from paper doilies red construction paper bright foils, and samples of wallpaper.

People send their sweethearts greeting cards that say won’t you be my valentine?

Valentine’s Day is celebrated on February 14, as a romantic festival.

2 answers

Is Antiquities not a book title? Are titles not proper nouns?

Same about Pan

why the comma after after foils and none after doilies ?

Are you not quoting someone? "Won't you ...""
Book, movie, and other names/titles of works are capitalized. They are also underlined or printed in italics, if that option is available. In the second sentence, goddess is not capitalized. Pan, the name of the god, is. God is only capitalized if you are referring to the name of a god, as the Christian God. Other "gods" are not the name of the god, so the word is not capitalized. In the third sentence, you have a series of items from which Valentines are made. Each is separated by a comma when items are listed in series. "...paper doilies, red construction paper, bright foils, and..." "Won't you be my Valentine" is a quotation and must be in quotation marks, set off by a comma after "say". In the last sentence, "as a romantic festival" is a prepositional phrase modifying the verb "is celebrated" and is not set off by a comma.