Note: This was easier to make than it was to explain how. Feel free to change any of the wording.
If I have a notebook without a pocket page, I use light weight cardboard and DT to make one.
Cut the cardboard to desired height of pocket (I find that 1/4 height of the notebook is best), and cut width to about an inch thiner than the width of the notebook. Lay the prepared cardboard against the sturdy front or back cover of the notebook. Place the bottom edge about 1/2 inch away from the bottom edge of the cover, and center the width. Cut 3 strips of DT -sized to match the bottom and each of the 2 sides of the prepared cardboard. While holding the cardboard inplace, neatly and carefully stick the tape-edge along the edges of the sides and bottom of notebook. Then press the other edge of the tape onto the cardboard. You may want to re-inforce each side of the pocket opening with a small piece of DT placed diagonally.
