How do you press flowers?

My technique is the old-fashioned way, I use large rolls of paper which you can buy from Ikea, lay the flowers out on the paper, over the top another layer of paper and then a sheet of cardboard and repeat until you have enough flowers. On top of this I placed lots of books and left until they were ready. To stick I just used spray glue and you can seal with clear varnish if you wish.