I saw this beautiful heart garland on Pinterest. The original pin I found linked me to a site in a foreign language. So, I just looked at the pictures and did it on my own. I have since found a blog on Craftzine that gives a tutorial.
I did two things differently. I used wood balls instead of felt ones. Also, I used craft felt. I don't have the money for wool felt and I have no idea where to find felt balls.
I noticed right away that my felt wasn't stiff enough to hold the heart shape. So, I had to figure out how to fix it. To stiffen the felt I watered down Elmer's glue and painted the hearts.
I laid them out to dry, and to my amazement, it worked great!
To paint the balls, I took strips of tin foil and rolled them into thin tubes. I then threaded the balls onto the foil. The foil was stiff and thick enough to keep them still and separate, perfect for painting!