What I did:
- some sharp lines was soften up.
- changed the shading a bit and simplified it!
- Break the SB-rule on the gun barrel but sometimes it is ....
- moved stickers, and added one that I saw on a picture.
- added some small metal bits that hanging on the turret housing, that wasn't drawn.
- did a small change in the color of the roof of the gun house.
- did a one pixel change on the lower front bit of the gun-housing.
- just for testing colors. the gun on the right have a darker railing than the gun on the left. (here is the possibility to cheat a bit and give the railings two colors. giving the aft railing darker color than that railing that is in front of it)