Start with a sheet of A4 paper, and cut the paper into a square. I used a 17cm square as I found 21cm (width or A4 was too large), and 13cm (recommended by bloom4ever) was too difficult to fold.
I will not go through each folding step as there is numerous resources already available:
- How to fold origami roses (bloom4ever)] - very good instructions except for step 25.
- Rose (pajarita.org) - alternative instructions
- How to Fold a Paper Rose (wikiHow) - How to Fold a Paper Rose (wikiHow)
This YouTube video saved my life, big credit to the producer.
I have included my own version of the tricky part. It should also help.
Make as many rose heads as required.