Make one side of the drawer for twin A and the other side for twin B. (twiniversity.com)
For this piece I painted the insides and sides of the drawers with Fusion Mineral Paint in Prairie Sunset — the colour you helped me choose! (coloursaturatedlife.com)
Measure, mark and position the drawer face so that there is approximately 1/2» space on all 4 sides of the drawer face from the edge of the drawer sides. (buildsomething.com)