Time to sew the blocks into rows and sew the rows together and then add the borders.
For the borders:
#1 – Background fabric. Strips are cut 1-1/2″. The side strips should measure 1-1/2″ x 70-1/2″. The top and bottom borders should measure 1-1/2″ x 52-1/2″.
#2 – Red fabric. Strips are cut 1-1/2″. The side strips should measure 1-1/2″ x 72-1/2″. The top and bottom borders should measure 1-1/2″ x 54-1/2″.
#3 – Navy fabric. Strips are cut 4″. The side strips should measure 4″ x 74-1/2″. The top and bottom borders should measure 4″ x 61-1/2″.
The top should now measure 61″ x 81″.
For the binding, I would cut 9 strips and would probably end up not using much (if any) of the 9th strip but according to my calculations, just a smidgen over 8 strips may be needed and I’d rather have the extra strip than be short. But . . if you’re going to finish the quilt quickly and bind it right away, you might want to cut 8 strips and then go back and cut the 9th one only if needed.