i am FAR from an autobody man, my fenders show it... however if you think adjusting a door is beyond you, YEAH, stay out of the shop. as i mentioned, theres 2 holes in the backside of the hinges that make re-alignment a BREEZE.... tighten down the 2 torx bolts you can get thru the hole, ignoring the 3rd bolt untill everythings good.
and i wouldnt worry about sag unless youve got a 2door..... in which case, your hinges probably need to be welded allready anyways...