Been playing around with compass roses and made up this template in PS to help. The first is a psd file with three layers. The second is a jpeg. You can print out the jpeg and then use tracing paper to draw your rose over the top. I plan to do some in photoshop and some hand drawn on tracing paper that I will then scan back in.
Hope they are useful
Not sure if you can upload psd's but we'll soon find out!