Seconding Stormraven's recommendation. That site is GREAT. They have whole lists of specific patterns - not sure if there's a list for generic Elves, but there are for specific characters, and you could always do one of those patterns in a fabric of your own choosing.
Also, I know Simplicity did a pattern that was basically a simplified version of one of Elrond's robes. I believe it is out of print now, but you could probably still find it on Ebay or possibly Etsy.
Isaak von Kämpfer | Trinity Blood
Elrond (Armor) | LotR
Ulquiorra Cifer | Bleach
.x.x.x. Costume journal, tutorials, and general wackiness here .x.x.x.