Taking care of stamps
DISCLAIMER: The following techniques are what I do and not necessarily the best practice and I make no warranty about the outcome. In other words proceed at your own risk!
Place the fully dry stamps as flat as possible on a piece of glassine or other non-porous piece of blank paper on a flat surface – I use my dining table. Next, place another sheet on top of them. Cover all the stamps with a large heavy book – I use my Stanley Gibbons catalogue. Leave it for a few days.
If your stamps are damp or drip dry then use a Desert Magic drying book or equivalent. Place the shaken damp stamps gum side down on the release paper and close the book with the heavy blotting page covering the stamps. Put a heavy book on top and leave for a day or so.