Make a copy of the recently made ellipses’ layers and apply the Free Transform (Ctrl+T) command to change the copies’ sizes, placing them the same way demonstrated next picture:

Take the Ellipse Tool (U) again and make one more ellipse:

Click on Add a layer style icon from bottom part of the Layers panel and select Bevel and Emboss.

Add Gradient Overlay.

Click in the color bar to open the Gradient Editor and set the color stops as shown. Click OK to close the Gradient Editor dialog box.

We’ve got the next result:

Place the layer with the ellipse under the orange one, the same way indicated below:

Make many copies of the last represented layer and select the Free Transform (Ctrl+T) command to change the copies’ sizes, placing them as it is demonstrated below:

Next ellipse will be represented with the same Ellipse Tool (U).

Click on Add a layer style icon from bottom part of the Layers panel and select Bevel and Emboss.

Add Gradient Overlay.

Click in the color bar to open the Gradient Editor and set the color stops as shown. Click OK to close the Gradient Editor dialog box.

We’ve got the next result:

Make copies of the layer containing the white ellipse, applying for the copies the Direct Selection Tool (A) and the Convert Point Tool to distort the ellipses’ shapes.

Select the Pen Tool (P), set the drawing mode on Shape Layers in Options bar and draw many triangles of the color #00853C.

Insert also several triangles of the color #C9CAC9.

Next we have to combine in a group all the layers containing the triangles (press in this case CTRL button to select the necessary layers and then hold on the left mouse’ s button while dragging the selected layers on Create a new group icon from bottom part of the Layers panel).

Make a copy of the new group, which copy should be rasterized. Press CTRL+E to Merge Down all the layers from group. Using the Free Transform (Ctrl+T) command, we can place the layer with the triangles under the ellipses’ layers.

Click on Add a layer style icon from bottom part of the Layers panel and select Color Overlay.

We’ve got the next result:

Make one more copy of the layer containing the triangles, applying for the copy different Color Overlay settings:

We’ve got the next result:

Click Create new fill or adjustment layer from bottom part of the Layers panel and click to Exposure. Adjust the following options:

We’ve got the next result:

Click once again Create new fill or adjustment layer from bottom part of the Layers panel and click to Curves to adjust the curve shape as shown to make a little color corrections.

We’ve got the next result:

Finished!

View full size here.

Download free Layered PSD file.