Hi there. This is my guide for Ashe. I don't usually play AD carry, but i found this build the best for Ashe as AD carry. Enjoy and Vote if you like it. (:

For Runes I bring Marks of Desolation, the armor penetration is really good at last hitting that is really important on AD carry. For seals I bring Seals of Resilience because armor is really needed since you'll most likely play against another AD carry. For gylphs, Gylphs of shielding are great on late game because you can take so more damage instead of insta dying for nothing. For quintessences, the strength ones are the best for some extra AD, since you already have some Armor penetration.

For Masteries that's not much to say, just the standard Masteries for AD carry, but with a point on Summoner's Resolve, to get more health on heal, i don't find useful getting more 2 magic resistance instead of that so, let's get in the items.

For items i like to start with doran's blade because it gives some sustain early game. qhen you go back to base you can buy boots and another doran's blade, but you can skip the doran's and go strait for the berserker's greaves, but 2 doran's blade are really helpful at last hitting and some more hp and more sustain.
When you come back again make sure you have enough money for the B. F. Sword, and if you have some money buy Vampiric scepter for even more sustain.
Then you will see that you want some attack speed, then buy Zeal and go strait for your Infinity Edge.
Then you'll buy your phantom dancer for more attack speed and critical chance.
From here the game should be over, but if not, go for your Black cleaver, that really helps, reducing the armor of enemy's that you hit and the the last whisper for some armor penetration and some more attack damage. And that's all for items.

Not much to say about this.
Just prioritize R>W>Q>E.

This is the spells i found more useful on AD carry. You'll need your Heal if you want to go in a team-fight without dying and help your mates. And the flash for some escapes is really helpful.

On ranked games i think this build is the best. Gives much sustain, you kill really fast, and they don't even have time to come and engage at you. Even the tankers will cry when they see you buying Black Cleaver and Last whisper. :D

Pros
- Much sustain;
- Much damage;
- Really good AD carry;
- Global Ulti;
- It's so powerful!

Cons
- Squishy;
- Get too much focus for being the AD carry;
- No one cares about her for being so old-school. :c

I suggest you to keep a distance behind your mates and hitting the enemy team on team-fights. Help make the dragon when the jungle asks and keep your ulti for initiate or to run away. Try to kill the enemy AD Carry first on team-fights, and don't let it farm on early-game and your team have the advantage.

Like i said before on the guide, you should last hit and get some harass on the enemy AD carry so it can't farm. You should have a good support, soraka is a good one that gives you even more sustain on the lane and really helps on team-fights.
Late-game you can go and farm the jungle when the lanes are all secured and you won yours.

In this guide I gave my opinion about what i think of all things. Some people can have another opinion, but i think this is the best build for Ashe. I don't think this guide is better than another one because all have different opinions about hoe to build their own champions, but, just try it, You'll enjoy. And that's all, I hope you enjoyed. (: