American English is preferred on this wiki, so you should use American spellings. However, if it's how you prefer to write it, then use your own preferred variant of English.
Unless you're using a semicolon, please use "and."
Ex: "He stops; then he looks around," or "He stops, and then he looks around."
Use commas properly.
Wrong: "The law stated that all fish, and animals…" (Comma is unnecessary here.)
Right: "The law stated that all fish and animals…"
This use dialogue correctly.
Wrong: “Yes, my lord?” He enquired. (You shouldn’t capitalize "he.")