Task:  I want to Dynamic the last taken photo so , apply the playa filter to the last photo taken in the Gallery app
Steps:
Click on the last picture of the gallery
Click on the Edit icon at the bottom of the screen 
Click on the Dynamic tab
Swipe left to view the filter option
Swipe left to view the filter option
Click on the Filters option
Click on the  playa filter
Click on the save copy tab 
Click on the save copy tab