Wood elves will most likely have racial bonuses and abilities reflecting nature, survival and other guerilla warfare stuff.
High elves will most likely have racial bonuses and abilities reflecting higher learning (magic?), sophisticated diplomacy and courtly intrigue.
Wood elves walk like this: "Doop dee-doop dee doop", while High elves walk like this: "Awwww yeeeeeaaaaahhh...."
...while halflings drool and swing dead cats like flails.
Remember also to change the starting equipment of the Human appropriately (you know, silver cutlery, pan on the head as helmet, beer-tray for a shield, etc., etc.).