I've been super excited to try adding elbow patches to one of my cardigans since I saw this post over on a "A Beautiful Mess". Due to lack of patience and some frustration on my end, my ultra talented and crafty mom ended up doing most of the work - but hey, I cut out the hearts!
Just mark where you want the patches to be, it helps to be wearing the cardigan when you do this. Once marked, pin on the patches and stitch them in place. I used a blanket stitch to give a nice edge to the patch.
Love how this turned out. Adds just the right touch of whimsy to an otherwise typical cardigan.