Actually, even if you post your save, you can't get it for him. Since the item doesn't save on the save file itself. Once you get the item, it creates another file that will be in your save folder.
Anyways, the tip:
When you double jump, try to land somewhere in the middle of the platform the moon is about to destroy. Then, time your jump so that you hit the edge of the ledge that you have to get to. From there, The Kid should automatically boost up due to momentum. Keep holding right the whole time. That's how I got there. Oh, and when you do get on the ledge, jump to the left and shoot the save, before the bullet lands on the save, jump quickly back onto the ledge. This will ensure that you spawn on the ledge even if you die (yes, you will die in case you haven't figured it out already). If you're confused about how to save there, this video might help you out:
http://www.youtube.com/watch?v=DJ7VnP-kjr8Just scroll to the Ghosts and Goblins area (it should be the second section of the video) and he'll demonstrate how to save there, and if you're interested, how to get the item.
I hope this has helped.