|Step by step|
Note that if you flipped those, it would appear to be bumping out, not in. This is the importance of shadow/highlight placement! Finally, I added some white "hot spots" on some corners.
For the screws, I start with a flat gray circle. Next, I pick up just a little Kryolan black and brush on a shadow around the bottom left side of the screw head. 3rd, I'll create the shadow that is cast by the screw onto the skin. I use Kryolan black for this too. To get a nice, soft, gradual shadow, I will lay down some black first. Then I'll rinse my brush, just get it a little wet, and then carefully scrub the edge of my line to re-activate the paint and feather it out. 4th, I added a hot spot with Wolfe white, and finally, the Phillips head "x" shape with wolfe black. Notice how slightly curving the lines, rather than a straight-on "+" sign, gives it more of an illusion of depth and roundness.
I have totally fallen in love with Wolfe black and white, and ALMOST totally replaced my Kryolan with Wolfe. But, I keep my Kryolan black on hand still because it works great for light shadows, like I did here and on my 3-D spider. It behaves a little more like a watercolor paint, enabling you to control the shade, whereas Wolfe seems to be consistently super duper solid black. One of the many reasons you'll see professional painters with several blacks and whites in their kit...different brands do different things!
And speaking of different brands, I am excited to say that my first big shipment of Paradise Makeup AQ is on it's way, and should be available for purchase in the shop very soon! Stay tuned! :-)