
Then using the Paint Bucket tool, I dump a very dark gray into my shape:

In this next shot I've turned the photo layer "off" and added a blue area on a new layer below the grille layer, so you can better see what I'm doing with the grille. I removed the area where the "holes" are in the grille by drawing the shape of each hole and hitting "Delete." Once I had the basic grille done, I duplicated that layer, used the Color Overlay command to change the color of my duplicate grille to a light gray, then moved the light gray grille layer under the dark gray grille layer... then moved the light gray grille a bit towards the upper left, like this:

You can see that because I moved the gray grille over to the left and up, there are now some "missing" areas (circled in red) that I have to add, by drawing the shape with the Lasso tool and filling in the area with light gray:

Then I used the Magic Wand tool to select the light gray grille and used the brush to add a white highlight to the corner:

Next I added some black, on a new layer below the grille layers:

Because the grille bars are slightly rounded, I used the Gaussian Blur tool to slightly blur the grille. I can blur only the dark gray grille without affecting the light gray grille because the dark gray grille is still on its own, separate layer.

At this point I merged all the grille layers together, and merged the grille layer into the main illustration layer. I also used the brush and some white to add a small soft highlight to the corner of the grille:


























