Q:

How to perspective project or warp an image onto a book cover?

I'm trying to photoshop an image onto a book cover for a mockup, but am a bit confused about the best way to do this?
I'm using the 'Perspective' warp tool, but I'm finding it hard to:

Set the perspective exactly correct
Keep the image from being resized without respecting ratio

I seem to recall in the past being able to almost define a plane, throwing my image onto the plane and resizing/scaling it accordingly, whereas perspective warp confuses me because you aren't defining the plane of the object you want to map onto, but rather the object you want to map itself.
For example:

Setting perspective layout

Warping

End

Is there a better way to do this? I find it very finicky to know if the perspective is actually correct without a lot of fiddling, and also the aspect ratio of the image is definitely off

A:

Ah, I remembered what I was thinking of, the Vanishing Point tool.

