mocha latte 11

So I was trying to make a lil video and I didn’t want the background to just be white I figured that be too boring so I was gonna change it up and got the appropriate proportions for a portrait type. And I had the background image under everything else I’ve done but for some reason the background image blocks everything and idk why. It’s my understanding the if something is above a thing than it’ll show while the thing below it will be in the back. Idk how to fix it I’m not sure what to do and I’m annoyed cause future plans might be ruined if this doesn’t change. And in those cases I might ha