Something to remember when depicting damage is that when you open up areas that are ordinarily covered, you'll want to reproduce the interior detail. For example, if your Storch has lost a wing, you'll need to show the interior structure where the break occurred. If you want to be accurate, then find as many photographic resources as you can--the Internet makes this relatively easy, of course--and study them.
Bullet holes can be reproduced in styrene by using a Dremel or other rotary tool, with a grinder bit, to remove material from the inside of the spot where the hole should appear, and then punching through the thinned plastic with a knife tip. Bullets will tend to leave a cleaner hole, cannon shells, like the 20mm used by the Japanese and Germans, will penetrate and explode, leaving bigger, more jagged holes in the aircraft surface.
Metal surfaces will show different damage from fabric surfaces. Again, be sure to check whatever resources you can find and study them.
Did the aircraft burn? You'll want to show fire and smoke damage, then. Again, my tip is to look for as many resources as you can find and study them, to get a good idea.
Another great resource is Sheperd Paine, whose "Tips on Building Dioramas" were included in Monogram's armor and aircraft kits back in the Seventies. Shep also wrote a book on building dios, as well as books on painting figures. This is a link to a page that has several of the Monogram brochures (actually, it might be all of Shep's Monogram dioramas):
http://sheperdpaine.atspace.com/
Shep was the inspiration for generations of modelers from the 70's and beyond, and his tips are just plain common sense, with inspiration added it. Well worth checking out, or tracking down his books, for more info.
Hope that helps!
Prost!
Brad
