Start by creating a rounded rectangle using rounded rectangle shape tool.
Press Ctrl+T. Right click the layer and select warp. Adjust nodes to get the shape as shown.
Double click the layer to open layer style window. Apply layer style with the settings shown.
Press Alt key and keep hitting the down arrow key to create 3d extrusion.
Select and merge all the duplicate layers. Double click the layer to open layer style window. Apply layer style with the settings shown.
Select the merged extruded layer and scale up a bit.
Create a rounded rectangle using rounded rectangle shape tool. Press Ctrl+T. Right click the layer and select warp. Adjust nodes to get the shape as shown.
Double click the layer to open layer style window. Apply layer style with the settings shown.
Create a rectangle using rectangular shape tool. Press Ctrl+T. Right click the layer and select distort. Adjust nodes to get the shape as shown. Move this layer below the scanner top layer in layer order in layer palette.
Double click the layer to open layer style window. Apply layer style with the settings shown.
Create an ellipse for the button using elliptical shape tool.
Double click the layer to open layer style window. Apply layer style with the settings shown.
Create a selection of left edge using polygon lasso tool.
Create a new layer and apply a black to white gradient in linear mode.
Change the layer mode to screen.
Similarly create shiny layers on top of all other parts of the scanner.
Create more buttons.
Create an ellipse using elliptical shape tool. Enable subtract form shape area form the top bar. Create a rectangle using rectangular shape tool.
Double click the layer to open layer style window. Apply layer style with the settings shown.
Select and merge all the layers.
Double click the layer to open layer style window. Apply layer style with the settings shown.
