Shindeiru here from EUW. This is the first of many guides to come showcasing the most meta current build for different league champions. Ashe is a versatile and fun champ that I love playing because I can just spam click A to attack move click and go afk. She can be played in tons of roles including bot, support and even toplane in some matchups due to her slow in the long lane being able to kite anyone level 1 - Future guide ideas perhaps.
My discord .shindeiru. is open to dms regarding this guide and any future additions. Please send recommendations, complaints, questions, and answers there or in the comments of this quide. If you like the concepts, gained new knowledge or want more in the future feel free to leave a like on the guide C:

Attacking minions or towers keeps your Q activatable - Attack minions 3 times before leading with aa q aa...
Ult combo for close range with w followed by r. The slow will make it much easier to hit and it will be more unexpected, deal more burst damage and it will animation cancel the w.
In early lane you can abuse last hitting a minion and following up with w through the gap that is made for poke behind the wave.
You will scale as an ADC really well and can carry late game team fights. Dont worry about 50/50 flipping the game level 1-3. Sometimes in bad matchups you can just play safe and farm under tower last hitting.
In a late game team fight, try to play distance and kite behind your carry or tank supp/top if you are the carry.
If you are very advanced (high elo) make sure to also track enemy jungle around map and listen to pings from your jungler asking for objective vision from your E.
Late game you can scout with E for enemy flank TPs, solo dragon takes, assassin flanks, etc...

+Tons of slows with passive and crit passive double slow.
+Hard CC global ult.
+Vision on E for objective control.
+Amazing two item powerspike.
+Speed diff over enemy bot.

-R is low damage.
-Takes a few extra autos to become activated in team fights.
-No one item powerspike.