Learn to properly posture and trade in lane. Keep bush control. The amount of supports I see who just sit behind me (AD main) and not do anything at all makes me sad. Have presence and make sure the enemy knows you're there ready to fuck them up if they step too close. When a fight happens, position yourself so that the enemy wants to hit you instead of the AD. Don't stand on the edge of auto attack range and try to take as little damage as possible. I see people try to play support like they're a carry and it's wrong way to play. Every ability or auto put on you instead of the AD significantly improves the chance of winning the fight.
Or just play Annie.
Or just play Annie.