I think you group and cluster. Maybe you include elements that are all related, yet are different lengths and widths.
Take the banners on my card.
I went with different lengths starting with the longest sticker banner on the right. I like how it brings the eye down to the sentiment.
The Party Time sticker had looked too small to be my sentiment, so I extended it! I changed the length of the sticker by placing it on the chevron paper. I turned it into a banner by cutting the end.
I used many of the elements of the new Embellishment Bundles to create this card! The sketch I made is right here!