Like Capn said. Your brain just isn't comfortable chasing another plane at first but you'll get over that.
Depth perception in this game will improve in time but regardless of how good you become just enjoy the thrill.
Take it from me. I've been flying combat for about 4 years now and I am still about the worst pilot in the nation but I LOVE it! Some guys are ticked if they don't get at least 3 cuts per round. I'm excited if I get 3 cuts per event!