Thumb-to-Finger
Spread your fingers wide, then slowly bring each finger to touch the thumb, making an “O” shape between the thumb and finger. Repeat several times.
Wrist and Finger Stretches
Relax your wrist, then gently form a fist. Using your opposite hand, press down on your fist to stretch the muscles in the back of your hand and top of your forearm. Flip your hand over, palm facing up, then gently pull down on your fingers with the opposite hand. You can also do this stretch on each individual finger.
For a more guided tutorial on how to stretch out this area, watch this video!