Needs a improvement

I cant figure out how to change the background to a picture. So other then that I think it is a really good app. (You should add that in the next update) it is very helpful for school presentations and assignments. So for that I had to use a bad working computer. Overall it would be ⭐️⭐️⭐️⭐️and a half stars. Very helpful and cool?! lol ? dont forget to add that little adjustment. Thanks ? bye ?

Tsunami says about Google Slides, v1.2017.222