looks very flat and technique isnt too well refined, the shading looks very random... hence the round form of the crate it seems like the plane flew directly into a vulcano, , the earth should be more sqeezed by the impact i guess...i think u could get away with less colors too...
heres an edit, i know the width doesnt meet with the challenge rules anymore but i thought id change the composition a little since it felt a bit crampedwith the big plane in the center
http://i992.photobucket.com/albums/af45/oooonek/crashed_plane.gif
This is very uh.. Crunchy