The northwest picture looks way too smooth to me. The registration has been blurred out and many lines, especially the wing and the black line near the nose have become jaggged. When you edit a picture, try not to use so much SmartBlur... sharpening may help, but a rescan might be the best solution.
With the Canadian, it looks off-center and the white almost looks too bright compared to the rest of the picture. I think it could get on with some cropping and maybe a little less brightness/more contrast. Why was it rejected?
Why yes, in fact, I am a rocket scientist...