This is beautiful. Use a high quality yarn, such as cashmere. I added 2" to the length. The edges are finished with an I cord knit into the pattern. I will make this one again.
(Used this mostly as inspiration for Ellie's 1st birthday banner.) Didn't use paint-chips. (Seriously people, that's basically stealing.) Cut hearts with Cricut (about 2.5"). Cut "Happy Birthday" w/ Cricut (1.5"). Glued letters to hearts, punched holes in the tops and strung coordinating ribbon through to hang. Took two hours, off and on.