Okay, I hate to do this to you but I found one of the coolest koru images around. Unfortunately it's copyright protected so you're just going to have to click the link to see it. Sure I could have emailed her and asked for permission, but when you see it you will understand why I just could not wait.
Seriously, go check it out. It has the recipe and everything. :) And maybe if you're really good, I'll post a bonus guest koru later. Enjoy!