I have put together another box to show you the dimensions. This time I made a few changes to my box so you can the possibilities. I added a ribbon handle and the closure is Basic Grey magnets.
Score the 11" side at 3 3/4", 4 3/4", 8 1/2" and 9 9/16 (just a smidge past 9 1/2)
Score the 4 3/4" side at 1" and 3 3/4" (1" from either side).
Cut the box as shown above. Cutting slight pieces away from those center tabs will make folding your box easier when you assemble it.
I wanted the inside of my box to have a bit of a cut out so I used part of a punch to remove a piece.
Below is a picture of how it should look when all the score lines are folded. You can see how the box will come together now.
Add a strong adhesive, like red-liner tape, to the sides indicated by the arrow above. This will keep your seams towards the back of your box. Assemble the box.
To reinforce the front flap, I cut a second piece of cardstock slightly longer than the flap, used a border punch on it and then adhered it to the underside of the front flap.
I used 2 Basic Grey magnets for my closures. I find that the magnets are so strong that often times the adhesive that comes on them does not stick well enough. I added a small dab of Glossy Accents to my magnets to ensure they stay where I want them.
Just to be different, I added a felt flower to the front. For the ribbon, I punched a 1/8" hole on either side of the box, fed through some 1/4" grosgrain ribbon and tied a knot in each end of the ribbon.
If you wanted these to go even faster, use some heavy weight pattern paper. Double sided would be even better!