25A.
Many people are having a problem with the step 25. The
several figures shown below should clarify any misunderstanding you have. I
use a red color paper to show that all the pictures are related to one fold,
i.e., the step 25.
The step #25 is a valley fold.
Nowdays, there are many instructional video for helping you folding a standard rose. Two I can find from Google search are:
http://www.youtube.com/watch?v=E72E6rqCjRU
Watch carefully on 3:30 for the step 25.