Right well, I found the keys.
Why don't you model a broken wall, rather than texture one? It will look a lot more convincing considering a car is supposed to have crashed into it.
The letter was a nice touch, but my key piece of advice for people wanting to make games is:
How can you expect to finish a game if you don't put the effort into making custom media?
Custom media is the difference between your game and everyone else's. Anybody can throw a level together with the stock media that comes with FPSC.
Download and play around with the following programs:
Anim8or, a free modeling program.
LithUnWrap, a free UV mapping program.
The GIMP, free texture program.
Google them and look at a few tutorials. It doesn't take long but it will make your games look a heck of a lot better.
Paul
