As a sniper always try to get into nooks, crannies, or other small places where you can crouch or go prone. Try to choose areas where you have a good view of your targets, such as tall grass or places where people won't suspect you're hiding (especially if you have a view of the enemy's spawn point). Also be sure to use your binoculars when you've think you've been spotted, that way you're less obvious to your target. Be sure to only shoot to kill. In other words, only take necessary shots so your target or their friends don't detect you.