460230 Change Image background

I've attached the image called one. I need the background color changed from black to a a layered background that has flowers or white. I've attached a photo called two and this is what we are trying to do. We want image one to remain the same large size that it is when edited. We will resize to our liking. I don't have photoshop installed or I would do it myself. Simple task just lacking the software. Number two is how we want number one to look like but with different flowers and background. Purple or Violet Flowers for background would be nice. We also need this done right now! Thank you