I made the banner cake topper on my Silhouette and glued it to two white lolly pop sticks. The sticks slid right between the diapers and held in place well.
Like the original cake, I decorated this one with paper flowers. The flower decorations were cut on my Silhouette using the 3-D Ruffle Flower from the online store. Each flower was glued to a mini clothes pin, so they just clipped onto the outer ribbons on the cake tiers. Maybe the mama-to-be can find a way to re-use the flowers? I'd probably attach them to gifts in lieu of bows, or maybe string them together on ribbon to make a cute garland.
Speaking of ribbon, I found that fabulously wide green satin ribbon at Michael's - it is 4 inches wide, which is perfect for a diaper cake because what do you know ... little diapers are also 4 inches wide.
The ribbon was attached with a few straight pins into the back of the cake.
With my extra paper I made a few more flowers as a table decoration and a paper banner to hang.
I knew it was a good looking cake when one of the ladies at the baby shower asked when we were going to cut into it.