Need help fixing this
I use Photoshop Elements Photo Editor to edit scanned photos for listing on eBay. Recently my laptop crashed and now when I open a scanned image it has a white background - but if I rotate the image to get it straight, there is a black background revealed. I know I can use straighten and crop, but I want to be able to crop the photo with space around the edges so the buyer can see there is no damage to the edges - and I don't want that black bg getting in the way. In the example below, I can still crop with only white showing, but sometimes I can't. I'm guessing this has something to do with Layers? but I have no Photoshop training, and can't find a way to fix it.

