Carefully handling any and all cotton papers is the first important task. Although we don't have a video on this particular topic dents or creases that are visible as a result of shipping and miss-handling can potentially be remedied by slightly misting the area and putting some heavy weights on top. Sheets that are severely dented or creased may be more difficult to remedy and fix. Trial on one particular dented or creased area will tell you whether a slight water misting will help.