So here, I took a few frames out of your clip and adjusted the hand and arm. First, you don't want the hand or anything else covering your character's face, unless it's an important story point. In your case, we want to see his face so we can read his thought process. The actions that he's going through with fixing the car can all be restaged so that the hand is lower and not covering his face. The story point is still coming across, but now the silhouette is clear.
For the above one, I also lowered the car-holding-arm, since that hand pose is about putting the last piece on the car, so you'll have to adjust more than just his left arm.