Put your last name and a page number in the header. That way, when I drop a pile of papers, they don't get all mixed up.
I've seen several examples of this:
"Don't go there", Donny said.
"Don't go there".
Punctuation goes inside quotes, unless it changes the meaning, like a question mark that was not meant by the speaker. Otherwise, commas and periods go inside.
One person used Courier, which is not easy to read at all. Use Times or Times New Roman.
Another person didn't indent paragraphs, but did double-space. You should do both.