Image imported into Lightroom and crop overlay applied to remove pizza box and center focus on the hat.
Image after cropping, with white balance changed to reduce warmth of image by bringing in cooler blues.
Using the Whites sliders, refined the whitest tones by setting value to +40 just inside the clipping point (see the histogram). By keeping the whitest tones just inside the edge of the histogram (say 95-96%), detail is preserved.
2. Using the Blacks slider, set the depth of the blackest levels of the file by sliding it to -2, again just to the clipping point in the histogram.
3. Adjusted clarity (+17), a micro contrast adjustment that enhances the fine detail in a photo.
Conversion to B&W in Lightroom using HSL panel. Done prior to exporting into Color Efex Pro.
Final image after post-processing in Color Efex Pro