I first had to relocate what little was in the boxes. This was easier then I thought. What I had previously kept in 5 boxes I was able to reorganise into 2 of my other half used boxes. So now I have 5 boxes to play with.
Mix your PVA glue in with some water. It should be nice and cloudy but still very runny. Use the plastic tub for this.
Rip strips of paper ready to be pasted onto the boxes. I have used mostly tissue paper and old packing paper (like the stuff you get with new shoes), you can however use anything from magazines to newspaper.