Don't go Lv50 till you have at least full i70PvP you will just get rushed down and die. Que 30/40
PvP Skills(my way): Purify > Equanimity > Purify CD > Attunement > Equanimity 20s > Divine Breath > Divine Breath II
Put Fairy always on obey/steady, use it to heal yourself and your team while kiting.
Abuse LoS as much as you can.
Always keep Ado+(Stoneskin(on yourself)) up.
Always keep at least 1 Lustrate for yourself, use Aetherflow on cd
Watch the enemys cds, if there is a MRD running at you with BFB and raging prepare to either sprint away or attune after Holmgang/Stun/Full Swing
Almost always purify Full Swing and dots or if you have time to dispell yourself

glhf