This is not - but I thin of Celebrate Today Quick Birthday Balloon Card Video Avery Elle Brushed Stamps set (sentiment); Avery Elle Custom Panels die set (balloon bottoms) but can use SSS balloon dies.
Love the buttons as balloons! Nice way to use a batch of buttons that are different. Stamp the birthday sentiment in different colors down the side and add a dimensional cut out for this handmade birthday card.
handmade birthday card from I'm in Haven . Penny Black balloon died cut in bright colors with string hanging down . chevron stencil using a die cut and acetate for the gray on gray background . white embossed sentiment on vellum belly band