What should be kept in mind in picking practice can be summarized into “both compact and dynamic!”. Concretely speaking, the forearm between wrist and elbow hardly moves (thus “compact”), while the hand (further part beyond the wrist) is waved in a “dynamic” way with the wrist as a supporting point. Beginners often tend to do just the opposite. The forearm moves excessively and because of this action the picking becomes inaccurate, then the wrist gets fixed to reduce the movement in a compensating way. This combination of two words which could be seen contradictory at a glance must be remembered in any moment of practicing.
Keeping this in mind, combine the recently reviewed techniques and pay close attention to the motions of your forearm, focus on your wrist as a supporting point and keep a close eye on your elbow in order to avoid it becoming your supporting point.
Do you have these two words in mind?