I would recommend to get a Zeal => BT => PD => IE+LW. A Chain Vest already shuts down most AD carries against bruisers, so you should get a LW before the 2nd PD

A Few things:

- A section on why you choose your skills in the order you do would be nice. Espcially as most Caitlin guides Ive read choose W first, because Q is too mana-intensive level 1, and traps really hurt if your opponent hits them early on. Also, they can be used to avoid early ganks by placing them in bushes like the tri0bush if you're on blue, etc. No substitue for wards, but still good.

- as stated by the person above, if you're in range to ignite someone, you're likely going to die if something goes wrong. Summoner Spells I would recommend instead of Ignite are Ghost, Teleport, or Heal.

-In tips, some extra stuff:
*While in bushes, each auto attack adds 2 to your headshot counter istead of 1.
*90 caliber net recoil can get you over some walls.
*Late game (after 2nd Phantom Dancers) it may be worthwhile, depending on the enemy team composition, to switch from Berserker Greaves to Mercury Threads. More of a personal choice, though the Tenacity and MR might make the difference between life and death in a team fight if you become targeted by an enemy Mage.

The guide could use more sections, but overall is fine.

+1 for effort. However some changes need to be made.

- Replace Ignite with Heal. You will need the heal to save you from ganks or divers, and Ignite is short ranged compared to your abilities.

- Your guide is a bit brief, try to expand on laning, what to do in teamfights, etc.

Otherwise it looks good to me.