There are several builds that you can use, of course, this depends on the items you have acquired, your skill and well perhaps paragon also counts, but not as much as the first two.
Elemental (Fire) build for wizard:
Items that you should be looking for in acquiring, in case you don't have them already:
Head: Andariel (Fire skills %, Intelligence, Socket, Critical Hit Chance, Atack Speed - those are best rolls)
Chest item: Cindercoat (Preferably with 3 sockets)
Gloves: Magefists (Atack Speed, Critical Hit Chance, Critical Hit Damage, Fire skills %)
