Have I Added my Trailers the Right Way?

I'm still finding my way around GoodReads. Yesterday, I discovered that I can post videos, so I added my book trailers.

http://www.goodreads.com/videos/list_...

Have I done this right?
It looks like they're playing ok. Have I offended against any written or unwritten Goodreads rules, or netiquette?

Since each of the anthologies (Bites: Ten Tales of Vampires, Haunted: Ten Tales of Ghosts, Cutlass: Ten Tales of Pirates, Scared: Ten Tales of Horror, Undead: Ten Tales of Zombies, Spells: Ten Tales of Magic, Beltane: Ten Tales of Witchcraft) has stories by several authors, I'd like to show the other authors' names as well, not just my own. Is this possible? How do I do that?

So far, all I've done is list them in the description. But it would be nice if their names would show as "author" as well, so it doesn't look like I'm the sole author. Can I do something? Or can they?