With the Tap the source rune, Arcane Orb should be used regularly as it is free, whereas Diamond Skin is up.
Damon Skin can help you deal with attack from your behind. When you use it with the Prism rune, you can use the Ray of Frost and Arcane Orb for six seconds free.
With the Snow Blast rune, Ray of Frost is used for increasing the damage dealer that aimed at single targets.
If you want to get a flat damage enhance, Magic Weapon can give you an extra 10% damage and you can use the Conduit rune to get some additional Arcane Power. Or you can use the Force Weapon for getting 15% extra damage bonus.
With the Sparkflint rune, Familiar can give you a 12% bonus damage. In addition, it can charge up your Ray of Frost and Arcane Orb if you combine the Familiar with Magic Weapon.
When playing in group, passive skills are very important, too. I think Prodigy or Astral Presence, Conflagration which can give quite great bonus damage to enemies from all sources after taking fire damage and Cold Blooded used for Frost damage. If you can master this builds, you can earn a lot from Diablo 3 account sell or Diablo 3 gold selling.
Then I want to talk about Conflagration which is useful for increasing the damage takes by 10% for 3 seconds after taking fire damage for group play.
For group play, using a slow weapon is a trick. It is not wise to use no signature spells with fast weapon. To get away with Ray of Frost and Arcane Orb, you can use two-hand club or staff. For better weapons, you need to earn Diablo 3 gold or buy D3 gold. Or you should know where tobuy Diablo 3 account with Diablo 3 items for sale.
If you can regenerate 12 Arcane Power per second and it costs 20 Arcane Power or use a slow staff that only attacks once per second, you can spend a net eight Arcane Power while Diamond skin is inactive. Whereas, you need spend a net 1 Arcane power, which means it costs no Arcane Power if you play this build with a slow weapon and you can get extra Arcane power from gear.
Hope this method can be useful for your Wizard builds.