One good way to add dimension to images or embellishments is to use double stick foam tape or 3-D Glue Dots. These literally allow items to pop out adding realism.
To Use Foam Tape: Simply, cut the foam tape into whatever shape and size you want. Then, attach to shape onto your scrapbook page. Double stick foam tape is available at Wal-Mart.
To Use Glue Dots: Remove a dot from the roll and place it onto your embellishment. You can also put the embellishment right on the dot, then pull the embellishment off with the dot attached and adhere onto your project.