First thing that pops out at me is the border. Its not as distracting as others I've seen done this way but i don't think it adds anything. As for the shot, intresting take on the F/A-18B. Maybe its just me spending too many years on an aircraft carrier, but it looks like its just coming off from a launch. Great timing. This also may just be me but on my monitor it looks a tad magenta. However I don't feel as though the color takes away from the shot. BTW I love the detail in the clouds.
Yes -- better contrast and detail help. I don't care so much for the thicker border on the top -- I make most of mine "poster style" with the border (approximately) equal on the top and sides, and fatter on the bottom (in my case, to accomodate a caption).
I like the addition of the contrast, but think you lost a bit of the detail in the sky, but the wings are showing up better in which is what you really want being the subbject and all. Perhaps a layer to contrast certain areas can help keep some detail as well?
I am not sure if I care for the double spaced boarder on the bottom and top, it works, but makes me spend more time looking at the bottom, than into the overall photo. Perhaps if it was in white, it wouldnt garner as much attention perhaps?
I like the improved contrast here! But I'm not as sure about the color changes -- I miss some of the blue to the sky. Maybe if going this direction, BW might be interesting!