I recently read 'Blessed Is His Child' by ameonna1 - http://ameonna1-writes.livejournal.com/7198.html - which fits the bill for fledgling!fic on multiple levels. (SO MUCH CUTE.)

Incomplete, ratings range from PG to NC-17 by chapter, pairings as follows: Dean/Castiel, Sam/Gabriel, Michael/Lucifer, Anna/Crowley; and the author's summary: “A family is a little kingdom, torn with factions and exposed to revolutions.”