1. Volley poke often. Spellthief gives extra money for hitting champions

2. Don't CS, i know contrary to normal Ashe's you don't need to take your partners CS.

3. Hawkshot is extra vision, I usually shoot it at the opposing teams red and blue on a regular basis. If your jungle is invading It'll give them a better idea of where the other jungle has been or is going to be.
As a secondary action hawkshot is good for checking bushes when Warding. With Sightstone and CV trinket you should have 3-5 wards down all the time. and if other team is ignoring CV wards abuse it.

4. Enchanted Crystal Arrow - Hitting Cross map Ults will pretty much guarantee someone gets a kill. So practice.

5. Late game team fighting goals - Slow everyone and use black cleaver to shred armor. Remember you have plenty of gold per 10, you dont need to get the kills.