Sizing photo on layer

[sallyanne]

I scanned original photos at 600 dpi/ppi and they ended up 2-4 times larger - the small ones did. Large ones will be able to be printed at double the size. So you can see more information etc. while working with them

If you want your photo to reach the borders of the canvas crop it as ofnuts suggested then put a white border on it when you are finished.