Any tank can easily shut down your Ashe as you're carrying no armor penetration what so ever. A critical strike is a lot weaker than most people think when facing a tank. Another downside that jholjhol pointed out earlier is that you don't even attempt to get a point into hawkshot early on. Without that hawk scouting, you'll be easily ganked. The extra gold per kill will be missed as well. Honestly you'd be better off selling one of your bloodthirsters for a banshee's veil, as right now your champ will be easily CC-ed by a silence or a stun. Armor penetration will also be helpful. Selling yet another Bloodthirster for a Black cleaver or a last whisper will increase damage output vs. tanks/bulky champions.

What Jhoi said, if you even plan on coming back to edit this build

Might want to incorporate some defense into it too :)

Here's my constructive criticism before I **** off :)

1) Outdated build (you can no longer buy a health pot with any Doran's item).
2) You don't even get one level in Hawkshot which can be a fatal mistake to you/your laning partner
3) You only have a 55% chance to crit with your item build, and yet you're buying Critical Damage runes
4) Stacking Bloodthirsters isn't a viable strategy

I don't think this is a very good Ashe build.