Hello and welcome to the site
We don't have any Wood Elf painting guides in the Tomes of Wisdom yet, but you could use some of the painting techniques used in this Legolas article on normal Wood Elves as a lot of things would be the same (cloth, skin, bows, hair etc.) - kb.php?a=92
If this isn't enough, you could always add an article request (via the following link - kb.php?i=request&action=add) to the library and someone helpful and willing might work on an article to add to the library for you.
Hope that helps.