Cut 2 holly leaves out for each shoe you want to dress up. There are three sizes on the pattern so they can work for baby shoes, kids, and teens/ adults.
Cut a pipe cleaner in half and then fold that in half to find the middle.
Sandwich the middle of the pipe cleaner between the points of two leaves. Take a couple stitched to sew the pipe cleaner to the leaves.
Thread one bell onto your needle and stitch in place. Repeat for the rest of bells.
Take a couple extra stitches to secure the sewing in place before knotting. This will help prevent the stitch from pulling through if the bells get man handled.
Secure the bling to the shoe by threading one side through a shoelace hole and twisting. Alternatively you can simply slide the pipe cleaner under the shoelace and twist to fasten it in place.
Notes
The holly is something that can easily be attached and detatched as to not be disruptive when it's not appropriate to make noise.