The way I work with the decoupage paper is to cut it to size and then apply a runny PVA glue, I water the PVA glue down till it is like single cream, I paint the glue mixture on to the surface and also the back of the paper. Apply the paper to your surface, gently rubbing out the air bubbles if there are any and then paint another layer of the watered down PVA over the top.
Once the box is covered with the decoupage papers and then left to dry. I then painted the sides and edges of the box with Cosmic shimmer paint.
For inside the box I painted it with Cosmic Shimmer chalk paint in a colour that matched the paper.
I wanted to add some interest to the lid of the box and the inside. I had made this box to keep my little bits of hand quilting and sewing in, so I used hexagons cut from the Tell the Bees paper pad. I inked their edges with a brown ink and when I had decided on the pattern I glued them into place. The hexies on the top are 1 inch hexies and the ones inside are 1.5 inch hexies.
Before I use the box I will add another layer of the PVA mixture to seal in the paper hexagons as it will get a lot of handling.
You can find the Tell the Bees decoupage papers in the Fruit Pixie shop here -http://www.thefruitpixie.co.uk/craft-consortium-tell-the-bees-collection-715-c.asp
Cosmic Shimmer paint-
As I said I have worked with this type of paper before. Here is a post I did a few years ago using another of the Craft Consortium decoupage paper and a different shaped box
This post is showing my candle holder jars I made with the wood design Craft Consortium decoupage papers -