Here's my mushroom picture from yesterday.
|Open original picture. Press Ctrl+J to duplicate the layer.|
|Click on the duplicated layer if it is not currently active, |
go to Filter – Blur – Gaussian Blur and enter an amount of 5%.
|Set the layer mode to “Overlay”. Here you go!|
To merge these two layers, select both layers and press Ctrl-E.
You can now save your file.
Note: This is just an immediate result... you can do extra editing to make this looks better