This is looking great but i have one improtant critisism.
The center colour of the actual holes should be 100% pure black, and 100% opaque,
Other wise they end up looking too 'painted on' in certain light, the third pic is a good example of this.
Also when the textures overlap it will look better too. Again in look at the stern of the ship in the third pic, the textures are too light or translucent, and its only pure black where they overlap eachother.
Do this - and im sure the results will be even better than they already are, great job, serveral people have had a crack improving damage textures in the past, but no one has come close to anything this good (that im aware of.)