The lines draw the observer into the center of the picture. You want the reader to be drawn to the next sentence and the next. You could start just about anywhere. I was told that the best place is to start in the middle of action. There is action, but you also know where she is.
Weather is also a good place to start.
The hot sun burned down on her shoulders as hatred burned in her heart. The second one is just the weather, but you are left wondering who would be out in that kind of weather and you would read on. Describing your character is another place to start. Her flaming red hair flew back from her face as she ran towards the park. This is just the start of her description and you read on to find out more about her and why she is running to the park.