So I'm on a PvP server, and I suck at PvP and need help. The only time I've ever been able to come close to killing someone by myself was with another mage. Granted this was when I was 50 and the mage was 66, but still. Rogues and Paladins stun me until I die. I've never actually done any battlegrounds or arenas on this character, mostly because I've been in a rush to level and I know it's better to wait until you're a higher level within the brackets to do battlegrounds. I know that you can blink out of stun effects, but with only being able to do that every 15 seconds, it's not always helpful.
What I usually try to do is frostbolt, frost nova, try and put up and ice barrier as people seem to break out of frost nova fairly easily. I don't really treat pvp that different from pve to be honest, which I think is a large part of my problem but I don't know what else to do. I do have some healing abilities. I"ve got Herbalism at 375, so I've got the Liferoot or whatever it's called HoT, and I've also got the Evocation glyph.
Any tips would be greatly appreciated. I know that methods are going to be different depending on the class you're up against, but just some basic tips would be awesome.