1. Use brown tooled leather to make a leather cover for the notebook
2. The size of the notebook is 11 1/8” x 9 1/8” x 1/2" (28.3x23x1.3cm),with the coil in diameter of 5/8"(1.6cm)
3.Make it with magnetic closure
4.For the right inside,make a pocket for the back cover of your notebook to slip into and an extra slanted pocket to slip papers into.
For the left inside, make a big pocket+a slanted pocket + a card slot like the item in the pic you sent via email.