The fingering technique is exactly the same as with the right hand. The 4th finger is positioned following the previous ones, the same way as the forefinger and the middle finger. Notice that no finger is sticked to another one. The 5th finger is not used (too weak) and remains, if possible, folded up inside the hand. This little finger mustn't be up (as if drinking a cup of tea!) because this way, the hand is tensed unnecessarily.