Cropping an image to a layer.

[gwpriester]

The simple answer is do it in Xara. It is so much easier.

I created a page to your size. Added a green square. Selected the square via the Magic Wand tool and cut it to the clipboard.

I created a new page and specified the background color transparent. Then pasted in place.

I'm sure I did this the hard way but I only use Photoshop as a pass through filter.