I still use an ancient print-n-cut pattern plus scissors to construct my pillowbox blanks, but if you have a pillowbox die or electronic cutting software, it'll be even easier! I keep two printed copies of my favorite pattern, one to trace the entire shape, the other to uses as a guide for scoring the curves. I like to completely cut out, score and fold all the moving parts before I begin the decoration phase. Since there are soooooooo many beautiful Eyelet Outlet Tapes, it's hard to choose just a few, so I decided to use lots of different ones to create a sort of woven effect on the blank pillowbox.
Start with one strip of tape (I chose Pine Tree) and place it on a diagonal, so that it covers both sides of the box, as well as the flap. Leave an inch or so at either edge, so you can wrap the ends around to secure them on the inside of the box.
Choose a second tape and place one or two strips of it perpendicularly to the first strip.
Work back and forth, adding layers in each direction, until two thirds of the box is covered. Use tapes of various widths, and let some overlap the edges of others, to add more variety to the design. I've mixed classic holiday designs like Tree Tape, Holiday Dots, Red Tree Tape, Merry Christmas Skinny Tape, Season's Greetings, etc, with other red and green tapes in my collection, like Heart Washi and Skinny Hearts Tape.
When you get to the end, if you've accidentally covered your sentiment, as I did with my Merry Christmas Tape, just go ahead and add a second strip on top! The translucency of the design makes it easy to line up a second layer perfectly!
Use your favorite dry adhesive to secure the flap. I like Scor-Tape, because it's very strong and comes in a bunch of widths. But remember, that it's a lot easier to attach Candy Cane Brads, Solid Color Flowers and other embellishments before you fold the box (!!!) and secure the flap with your extra strong, super-sticky tape! Do you notice anything about this picture? Yes, I forgot it'd be hard to punch holes and place brads after the box was taped together. Hence the bold italics! If you'd like to be extra sure your box will stay together for all eternity, add another decorative tape strip or two after it's constructed.