001.
Duplicate your base three times.
Set each duplicate to screen at 100%.
This depends on your own base, so you may need more or less screen layers.
002.
Create a new layer and fill it with (#7EC1E0).
Set it to softlight at 100%.
003.
Create a new layer and fill it with (#C6A5C9).
Set it to softlight at 100%.
004.
Create a new layer and fill it with (#34434A).
Set it to exclusion at 100%.
005.
Go to...
Select >> All.
Edit >> Copy Merged >> Paste.
Make sure the new layer is at the top.
Set it to colorburn at 100%.
006.
Go back to your exclusion layer.
Lower the opacity to 25%.
If its too dark, you also may want to play with the screen layers.
007.
Flatten.
Using the rectangular marquee tool, select an area of your base.
Go to...
Layer >> New >> From Copy.
Move it slightly in any direction, add a border around it, etc.
Final Product
Other Examples