I've seen some of these type door decorations on Pinterest. I used them for inspiration but didn't use a specific tutorial. I usually just "wing it". : ) But for you non-wingers, here is a tutorial on how I made mine.
This craft is very inexpensive. I used a cardboard box, paint (which is optional), felt, hot glue, and ribbon. I used my nice wool blend felt but they sell felt sheets for 25 cents at your local craft store.