your pros/cons banner says "props & cons"

...im done here...lel

Seraph's Embrace > Athene's Unholy Grail and what Vynertje said.. Lich Bane is not an optimal item for Cassiopeia as she spams her abilities rather than throwing in auto-attacks.

I disagree with a lot here. First of all, I feel like W is too good to skip till level 13. Q+W is enough to quickly clear mage minions and it also allows you some safety to not **** up your poison+E combo's. Also, I have some serious doubts on the effectiveness of Lich Bane and taking Athene's Unholy Grail over Rod of Ages or Seraph's Embrace.

Besides that, you should work on coding because it looks really messy right now, I doubt if many people would like to read through that wall of text.

The guide is quite short =/ also you say rush athenes at core items, but don't include athene in example build. Could realy use more work

Thanks mate i added bit more on.

I guess you're a good Cassiopeia. But there are 2 biggest factors in a guide:

1. Information
2. Graphics ( BBcode included).

Yours has a bit of both. But not enough of each. I'll explain;

• For the Masteries and Items setion. Almost literally all you did was crop/copy the graphics from the top, and include them as images in the bottom. [Information lacking]. What you should do is explain why you picked the masteries/items in clear detail. [Graphics lacking]
  
  
• Your Skill Sequence section lacks a lot of BBcode. Try to add a little more color, something like this:
  
  Spoiler: Click to view

  
  Miasma - Cassiopeia releases a cloud of poison, lightly damaging and slowing any enemy that happens to pass through it.
  Cassiopeia releases a growing cloud of poison that lasts for 7 seconds. Any enemy that passes through it is poisoned for 2 seconds, dealing 25/35/45/55/65 (+0.15) magic damage each second and slowing them by 15/20/25/30/35%. Continual exposure renews this poison.
  Cost
  70/80/90/100/110 Mana
  Range
  850
  
  I think it looks better, what about you?
  
  
• I would prefer if you could include situational summoner spells as well, if possible.
  
  
• In the beginning of the guide, showing the items, you spelt "LAS ITEM" Fix that please.
  
  
• You have Athene's Unholy Grail as a core item, but it isn't included in your example build. It's confusing.

Overall I like your guide, it has given me a few ideas for my own guide as well. +1
But I hope continue improving the guide, I see a lot of potential within.

Need extra help; Making a guide

P.S. Your Masteries section has "0 offense" and "0 utility". You should fix that.

Edit: You spelt "Props and Cons" in the graphics part. Change that :S I just noticed it.