I've got some pictures that have curved, is there a way of flattening them out? Can someone give me some tips please? They're not in a frame & displayed on the end panel on my kitchen cabinet.
Its probably due to one side having absorbed more moisture than the other.Try putting in a damp environment for a day or two to enable ththings to even out.
get a clear perspex sheet the same size as the end panel they are on and fix this over them, will flatten them and stop them curling again, then if you want to change the collage simply remove perspex sheet change the pics and replace sheet.