All photos copyright by Chuck Simon, 2006

The original of that to the right.   A building that I will assume to be part of the concert hall where we had just attended a concert.

First: Posterization with settings of 2, 2, 5. Opacity reduced to 80 percent.
Secondly, duplicated the posterization Layer and applied the Texturizer, Canvas, 70% 12, Top Left and Invert checked.
Undesirable patterns and noise developed in the very dark area.   These areas selected & then a Gaussian Blur of 1.5.   Set Blending to Multiply and the Opacity to 35 percent.
Detail revealed nicely compared to the original.
Text added, bevel applied, simplified so the same texture could be applied but at the reduced size the texture really doesn't show.

The original of the image below.

A large amount of editing took place to produce this image.   First it was converted to black and white.   This at the recommendation of the Posterize filter.   In that process I added more Red, twice.   Then with Adjustments, Photo Filters, I added 40% Blue.   What I was trying to do was increase the intensity of the sky.   Then it was Posterize with it set to 4 Levels.   This was followed by Poster Edges: settings 2, 1, 1 and Dry Brush settings: 1, 10, 2.   The remainder was adding of the text and styles to the text.   Oh, the beach area in the posterize layer has been erased to reveal the original photo.