Just an fyi, when resizing things (photoshop)
for some reason, the algorythm for raising the DPI of a photo, is much better than the algoryghm for 'scaling'.
So if you take a 500 x 500 image, with dpi of 72 (screen, jpg etc) rais its dpi to 300-500 you will get a much crisper picture than if you do a scale / size on it.
Just an fyi for anyone doing this sort of formatting etc.