I'm conducting a test of how well your fingers can move independently (except your thumb) because when I was testing my own fingers. Here's my procedure:
Step 1
Lay your right hand straight.
Step 2
Grip three of your fingers (except thumb) remaining the index finger.
Step 3
Bend the remaining finger so that it touches the palm without bending the hand. Don't worry if you can't do it, just go to the next step.
Step 4
Repeat Steps 2 and 3 with other fingers remain.
Step 5
Repeat Steps 1 to 4 while bending your fingers with your left hand.
Step 1
Lay your right hand straight.
Step 2
Grip three of your fingers (except thumb) remaining the index finger.
Step 3
Bend the remaining finger so that it touches the palm without bending the hand. Don't worry if you can't do it, just go to the next step.
Step 4
Repeat Steps 2 and 3 with other fingers remain.
Step 5
Repeat Steps 1 to 4 while bending your fingers with your left hand.