On the box and box lid you will make cuts on the two sides opposite each other. Cut up to the score line. This will create flaps that you will fold up and glue inside to form the box. Do not cut on all four sides of each as this will cut away the part of the flap you need to glue inside the bases. (However, if you should cut away that small flap, fear not. You can save the project by creating an outside decorative flap to glue each panel and create the necessary flaps.
I fold down all 4 of the smaller flaps and swirl some glue. I find it is easier to glue everything so that when you start to fold the box together, it is uniform.
Pull up the flaps, place the smaller cut flap inside, line it up all edges and hold to secure the glue. I have also used double sided tape but I feel glue is a wee bit more secure.
Here is a finished box and a tag to accompany. The tag comes from the extra paper I cut away from the 8-1/2x11 cardstock. The flower is a simple punch in several layers, and two buttons for the center. I added some Nestie corners just cuzzzzzzz.
I am always thrilled to give my box creations to Patty and I had a lot of fun making them.