This holder is a box and a "flap". You make the box and fold the back flap part and attach them. Here are the tips and dimensions. First the ingredients (all in inches)
Box: 2 ½ x 8 ½ scored at ½, 4, 4 ½, 8 and on the short side at 2
Back piece: 3 ½ x 8 ½ score at 2 ½, 3, 3 ½, 6
DSP 1 ¾ x 3 ¼
Trim your tabs and add tear and tape to the last 1/2" edge.
And a close up of the tab trimming. Do you see the little wedges I take out to reduce the bulk?
Put the box together, first by removing the tear n tape backing, making it into a box. Then close the bottom of the box. I suggest liquid glue or tear n tape.
Now fold the flap. Do you see the photo below with the bottom in an "M" shape? And the last flap (at the top of the photo)? Attach your box to the flap.
Don't forget to add a post it pad and pen.
Happy crafting, MaryKate