Gradient's parameters:

Draw Pencil in Photoshop

Fill 0% on the layers

Continue, making use of the known instrument and draw one more figure with the next sizes:

Draw Pencil in Photoshop

Gradient Overlay:

Draw Pencil in Photoshop

Gradient's parameters:

Draw Pencil in Photoshop

Copy the layer with the previous figure; turn it around with Free Transform option. Place it like in the picture and paint it with the color 496538:

Draw Pencil in Photoshop

Continue with the instrument PenTool and make one more figure with the
 
demonstrated sizes below:

Draw Pencil in Photoshop

Gradient Overlay:

Draw Pencil in Photoshop

Gradient's parameters:

Draw Pencil in Photoshop

Make use of the already known instrument and draw one more figure, having the next parameters:

Draw Pencil in Photoshop

Gradient Overlay:

Draw Pencil in Photoshop

Gradient's parameters:

Draw Pencil in Photoshop

If the layers have been placed correctly and everything has been done like in the picture, we'll get the next:

Draw Pencil in Photoshop

The final result!