Little pattern was shared by Patti at www.sudsol.org. NICE tutorial. If you are demo, you need to try a free trial there.... I've been there shortly after I became a demo and I'll never leave!
The measurements for the box are:
Card stock cut at: 4 1/4 x 7 3/8
Score the long side at:
Score the short side at:
Cut all the way down to the first score line from the short side on the 3/4 score line. Then cut from the side so you have a big T shaped. fold up, add your pretties and you are done.