The tutorials from you Jelmer, are always nice (exept for the funny sound and quality (well the most of your tutorials)of your tutorials (although you mentioned now: HQ), but something about this tutorial:
The wall texture sucks ass.
Try to find (or make one yourself) a better higher quality texture.
The result etc are looking nice, but that, to me, totally ruins the model.
BTW: are you Dutch or German?