This build shows how you automatically get fed with ashe. To make it even better, you can have Twisted fate in your team.
You should play as a AD carry with a support.

You shall only have runes that gives you more money.

This is the best alternitive for Ashe if you are going to max "greed".

Go for high damage output, you can buy "frozen mallet" to get more survive-ability and an even better slow.

You max "hawkshot" so you get feed as fast as you can. 1 in volley so you can lasthit more then 1 minion with one shot and you can slow more then one hero with one shot. You max the slow after "hawkshot" for maximum hunting-ability.

teleport for map control and ignite for finish of your enemies.

Farm as much you can!!!