I can give two suggestions about the glass. the first, to make it look sort of broken, I cut mine with a foam cutter. It works like a soldering iron, except its just a metal string that cuts. It doesnt cut through, but really weakens it where it runs through, then you snap on the line, worked good last time I used it.
The second is to use sprue nippers. Use them to do the cuts in the glass, atleast the ones I have, cause to much pressure and causes the plastic to get other cuts and splinters appart from where I cut, giving it a good realism.
Oh, and one more. The glass can crack, and not break. I did that on a dio, drilled a hole where the bullet would have went in, then used a knife to creat the circular cracks that expanded outward.
Some more comment, Some of your bullet holes looks good, others look like round circles. When you do them, stick a blade inside the hole and spin it, knicking and scraping the edges, getting rid of the uniformity.
Heres how my glass ended up looking. 
Why did you call it Tommy's new toy? They look like Yanks to me...
(other then that, I really like it, I like the graffiti, and the building colors! great job)