Good looking damage can be hard to achieve, but with a few basic tools and a little bit of planning, interesting looking decoration can be achieved.

+++Matheo the Entombed+++
Slain in training pits of the Lost Eyrie the butchered corpse of Matheo Angelis is now sealed in the heavy tomb of a Redemptor Dreadnought. A lasting reminder to the oath that was sworn and the price of brotherhood.
Tools:

First, I would recommend a scrap piece to practice on, even a small bit of sprue will help. Measure twice, cut once is the name of the game.
Step 1:

With a 1.0mm drill bit, dig lightly into the surface of the plastic, choose an organic pattern as if a brush had been shaken over the area, closer together in the center and spread further apart towards the edges, the trick is to ignore strict realism for a suggestion of reality, the aim is to make this look good.
Step 2:

Widen some of these holes with a 1.5 and 2.0mm drill bits, again not going very deep. remembering the brush analogy from the last step, focus the larger holes towards the center of the areas, with smaller ones towards the edge.
Step 3:

Go over the larger holes and drill the centers out with the 0.8mm drill bit, don’t worry too much if you drill all the way through the panel. then add some small dents scattered around randomly with the same bit.
Step 4:

Using the tip of the scalpel press towards the center of the hole. try varying pressures for different sizes as well as varying amounts of lines , but at least 5 per hole!
Step 5:

The last step is to widen and rough up some of these lines to make them more organic, using a sharp sculpting tool or other semi sharp metal object, push from the outside to the center of the hole along the scalpel cuts.
Closing Notes:
Remember to tell a story with the placement and size of the bullet holes, avoid the rear armour of valiant heroes to show that they never waver in the face of incoming enemies, place small arms fire lower on a large model to show basic infantry charging and higher caliber shots closer to the center of mass.
+++end transmission+++

