Much depends on the resolution of your textures. And also what kind of rivets actually were used. Some are big and good visible, but others are hardly visible.
What do you exactly mean with the Buttons style?
Have you read the tutorials below?
Here is something explained about the brush and the interval:
http://www.simmerspaintshop.com/foru...photoshop.html
Something more about rivets:
http://www.simmerspaintshop.com/foru...ep-rivets.html
And shading effects:
http://www.simmerspaintshop.com/foru...t-shading.html
