When out shooting, I shoot from different angles to vary the background. These two pictures are a good example. The first one, since the flower was tall, indoors and about waist high, I was able to tilt the camera up to get the sky through the window as a background. Which gave me the lovely light blue background even though the sky was cloudy.
On this second one which was not as tall as the first one. I angled the camera down and got the blurred background of surrounding plants.