We level up the warm-up exercises by using brush and ink, and further advance into drawing basic geometric forms using the same. Using brush and ink will force better sensitivity to the drawings and hence improve hand control.
Drawing lines, circles and waves using brush and ink.
Drawing basic geometric forms using brush and ink.
The above exercise should be done on A3 sheets for 10 - 15 minutes utilizing the brush and ink.
Stand upright, with hand movement starting from the shoulder; not from the wrists or elbows.