Yeah, I kind of figured that actually, regarding the weapon.
I did a edit to point you to what I ment.
- The weapon now shows the 'hole' in them, like in your sketch.
- I removed two of the red (which I thought was missiles) things next to the cannons.
- Toned down the red of the air intake (which I mistook for the cockpit).
- Darkened the cockpit
- Added more shadow on the white wings.
- Made it all one pixel wider to get a middle-pixel.
And as I said, your piece was fine from the beginning so you don't have to listen to anyone else.


EDIT:
trying to get transparancy...