this is my first own guide, in my point of view ashe is best carrier AD champion on game.
she have ammounts of damage and she have a good Crowd Controls.

Feel to Free Add me in Game: Europe Server Bioplasm.

Enjoy on my build!

Ashe consume alot of mana on ''Volley'' for farm and push enemy to around tower and fear to enemy dont come close to you because he just think you're really good.

i use this runes:

9x Great Mark of Strength
(on begin you can deal one shot ''critic damage'' on enemy, so i decided set this rune type for deal a good damage on critic and for more damage on ''Volley'').

9x Greater Seal of Clarity
9x Greater Glyph of Clarity
(Grants you alot of mana for spamming ''Volley'')

3x Greater Quintessence of Desolation
(more Armor Penetratrion against fighters and tanks)

Frost Shot i only use this skill at level 5 for unsure kill and slow enemy's on early team ganks

Volley is excelente for your farm and hit enemy with arrows is very annoying.

Hawkshot Every upgrade this spell gives you extra gold and you can use this for check if someone try to gank you
excelent to keep you save on lane.
Enchanted Crystal Arrow: Enchanted Crystal Arrow is awesome for prepare team fights.

Early Game Items:
(for this items sequence you need to be a good farmer minions.)

For Begin i use Doran's Blade grants you 9 atack damage, 100 Health and 3% Life Steal.

boots of swiftness for grants you a nice movement speed for prepare ganks to try go kill enemy's.
and welcome to a mid game.

Mid-Game Items:

you should get 2 phantom dancer because allowing you more movement speed for showing you more action in game on alot scenes team ganks, gives you alots of attack speed and Critic Chance with ''Frost Shot'' gives enemy annoying slow and alot of speed for ***ing enemy's.

now you need Damage, this item is perfect for Ashe, give her Crit Damage with your Attack speed.

Late-Game Phase:

Bloodthister give you continuous damage and life steal, perfect system to give you more combat steal.

Give you extra mana, HP and magic resistance. passive block one negative spell every 30 seconds. excelent against nukes and mage champions.