> > * load the first image > * make the canvas twice as wide to leave a blank on the right-hand side > * copy the first image into a new layer > * move the new layer over to the right
Is a new layer necessary. I don't have gimp here to try it, but how about: * load first image * select and copy to clipboard the whole image * make canvas twice as wide to leave a blank on the RHS * paste original image into RHS of image * if the pasted image goes in the wrong place, pick it up and move it with the mouse, somewhere in the menu there is probably a dialog to move it a precise number of pixels left right up or down. Also montage should do it: http://www.imagemagick.org/script/montage.php
