1st Duplicate your base and screen it. I duplicate mine twice, 100% screen and 25% screen. Sharpen it if necessary. Merge visible - Ctrl+Shift+E
2nd New layer and fill it with #FFD147. Turn to Soft Light 40%
3rd New layer. #56D9E8 Color Burn (or Burn) 25%
4th New layer. #B7F792 Color Burn 16%
5th New layer. #7D006E Exclusion 17%
6th New layer. #D9D9D9 Color Burn 100%
7th New layer. #FF6363 Soft Light 40%
8th Duplicate the 1st step layer and put it on top. Soft Light 60%.
And voilá! Hope it works for you (: Let me know if you wanna see how it looks step by step.
Other icons made with this tutorial