I know this is a perhaps just a little late, but that's a testament to the quality of this tutorial. One question: At step 8, when I make the bump map on the 50% grey layer, I use all the same settings as in the screen grabs but I don't seem to get any change whatsoever. Am I supposed to add the bump map to a different layer or is there something else I'm doing wrong?
Sorry if someone already asked this, I haven't read through all the replies to check.