I asked my hubby this one for you, since he practices Asatru. He said it's really just like any other spell, but you use the runes to help identify the intent. For example, I did one with the "F" rune or Feoh, and turned the rune into a charm for money and abundance (it did work, we ended up getting a huge IRS refund). BUt you could also use it to amplify the intent. He did recommend getting a nordic book on the runes, something by Eldred Thorsson. The Runecaster's Handbook is the one he likes. I hope that helped. I would have had him write this answer but, unfortunately, our schedules are opposite at the moment, so i got this out of a text lol. Blessed Be!