Working with images

I am nearly done with my latest CSS challenge, and I have one little thing to get set. I used one image as a background, and it set itself up perfectly in the top left. I have one more img, and it needs to be set on the bottom. I have not worked with images all that much, so I am wondering what is the best approach to dealing with multiple images? Is there a way to set multiple background images, or would I add this img in HTML and then just find a way to position it at the bottom?
Here is my pen

Then the challenge of what it should look like

Never mind, found you can set multiple background images and then us background position to set them where they need to be.