Not bad. Took me about... probably an hour to two hours to finish it. It's rather pretty, actually. The original design [6 - see the original paper copy I built at someone else's house] called for a larger ribbon to be slit into parts, but leaving a joined section for the wing. Since the ribbon I picked up wasn't big enough to slit at all, I had to use binder clips (err, I think that's what they're called...) to hold it together until I could get enough weaved together.
There's also a fish I want to build, but... it calls for ribbon of nearly double the thickness. Or I'll have to get creative about the design. I can probably do it, shouldn't be too hard.