Hi. I have built some fitted wardrobes. the doors are plywood hung from a sliding rail mechanism. I have a wall mural which comes in cut sections which I intend to fix to the doors to make a complete picture. I have sanded the plywood flat and wondered whether there is a specific sealer I should use before putting up the paper and if there is a specific adhesive I should then use to fix the paper to get the best results. Any advice would be gladly received.