You simply fold the perforated lines toward each other and adhere the flap (I used tape) to the inside of the other edge. The fold in the end flaps and adhere them to each other (I used glue). Then decorate!
This is the Silhouette Studio 3 cut file for a long triangle box. It is compatible with 8.5 x 11 and 12 x 12.
|Date:||May 23, 2014|