How do you dry flower petals? My roses are starting to wilt, how can I dry the petals...

My roses are starting to wilt, how can I dry the petals so that I can keep them for memories sake?
Answers:    pinch wax paper
and put the flower inbetween two sheets of it
after put them in an old-fashioned book , which can be thrown out
cause sometimes the flower can resign from behind a mess
wax broadsheet useally keeps this from taking place
but i have found it other the easiest way , when i be doing it along time ago !!
Hope it helps
put the petals surrounded by between the pages of a book.