Certain times of day are better for taking pictures than others. Generally mornings and evenings will offer the best lighting (and less tourists at attractions). Taking a picture with the sun behind your object will likely silhouette your object, so if that’s what you’re going for then great, but if not make sure to shoot with the sun behind you so that it lights up whatever you’re shooting. Couples will often bring props with them on their portrait sessions, and you want to make sure you incorporate these into their shoot. Whether it’s homemade or bought, it’s meaningful to the couple and it’s an easy way for the photos to be unique to the couple.