you need more formatting for starts

if your going off tank then your a pretty damage based one, get a frozen mallet, randuins, things like that that give defense and support

for movement speed i like the idea of phantom dancers but get either trinity force or force of nature.

sunfrie cape is always ueseful

oh and the fact that alahric supposedly commented trololol

you can tell by the missing spaces (where it says space) and if they comment and then have different sections that look like writing...yah

Wow, good job to notice such! I will be sure to +rep you iwillblessu. Sadly I never checked the top-rated Jarvan IV guide, so didn't even think about it :/

http://www.mobafire.com/league-of-legends/build/the-prince-of-solo-top-95233
exact copy of this...

Woah, a lot of text. Walls of texts, you should use time on colours and such :D Coding, here is a link that should help you

http://www.mobafire.com/league-of-legends/build/making-a-guide-101506
(this is not made by me)

Use it, and you can make a lot out of your guide, I can se how much time you used it on. PM me when you upgraded it with colours and icons. I do not play Jarvan IV so I won't say anything about your build and masteries :)