OneUp/TwoUp Stepper Mounted Fan Duct
I preferred this orientation, so added some angles so the zip ties could hold it at the proper angle. Also tweaked the nozzle end to try and direct the air flow more across the print. Hope it works well, the original was a nice design, I just started about 3 weeks ago with this stuff and haven't dialed it in so thing fit perfectly yet, this is my way of adjusting.
REDONE: 3/07/15
Ok, so I added a duct to redirect the upper air flow towards peek tube, lowered it and changed the angle slightly to direct the main flow towards the print better, also, and this was the main thing, set the portion that touches the stepper offset to line it up in the middle of the nozzle. I posted both directions depending on what side of the stepper your filament goes on. Unintended feature of this new version, I can now use the large zip-ties to attach it, if needed.