Metacarpal range of motion

Any suggestions on improving metacarpal range of motion for the first knuckle push up progressions? 

FKP + time + consistency

Seriously though it's fine to not start with full ROM. The idea is to develop it at each stage before advancing to a more difficult progression 

For anyone that does not already know.

In addition to the wrist exercise... If you want to gradually increase the range of motion in fingers.

When you pop your knuckles and or when you want to just relieve tension in your hand: Excluding your thumb. Push your fingers toward the "Back" of your hand instead toward your palm.

From personal experience, during hard skating falls... suddenly hyper-extending your thumb is not pleasant.