1. Duplicate the layer named "Dark Brown" You do this by clicking on that layer in the layer palette, hold down the mouse button and drag it down to the "new layer" icon at the bottom of the layer palette.

2. Now click on that duplicated layer and hold down the mouse button and drag it all the way to the top of the layers so that it lands right above the yellow fractal layer.

3. Double click on the layer and rename it "orangish brown."

4. Make sure your iris selection is active. If it isn't, load the selection (Select menu -> Load Selection).

5. Create a new foreground color in your color palette of RGB 124, 84, 0 and fill the circle with that color (alt-backspace).

6. Deselect the iris selection (ctrl-d).

7. Now click on the layer mask icon in that layer. You should now see a little circle icon next to the eyeball icon to let you know you are now in the layer mask.

8. Filter Menu -> Noise -> Add Noise, Amount = 200.

9. Filter Menu -> Blur -> Gaussian Blur, Amount = 4.4

10. Image Menu -> Adjust -> Levels, Input levels: 99, 1.00, 193

11. Filter Menu -> Blur -> Radial Blur, Amount = 70.

12. Image Menu -> Adjust -> Levels, Input levels: 47, 1.00, 180