This cake bunting was really easy to make. I created the diamond shapes on word, adjusted the outline size and color, added the pattern and then added the letters (as you can see below you need to have them facing oppositely), Print them out on sticker paper to make your life easier and then you can easily hand cut out the shapes, As you can see above for an 7" cake you only need a few, so hopefully your child's name isn't too big.
Here is the document I used (minus the letters)
I also made this birthday banner for the party. I made a 1 1/2 inch bias tape and then cut out the triangles with pinking shears. I cut out the letters on fabric backed with heat-n-bond on the Silhouette Machine and ironed them on. Pin the triangles between the inside of the bias tape and sew along the edge (make sure to fold in the ends and sew them nicely so they don't fray.