Does your camera have a "red dot" aiming feature? If so, place the camera on a tree about waist high and get in front of the camera and start moving backwards until the "red dot" is about crotch high on you. This is where your bait and/or projected site should be for getting better pictures.
Also make sure you know what time interval each picture is set on, (1 min,5min,10min,15min,30min,45min,60min) for example, if your camera is set on taking a picture every 10 minutes and you walk by it after it has just taken a picture, your camera wont take another picture for 10 more minutes.