These mermaid tags are cut at 4" using the Once Upon a Princess cricut cartridge...for all pieces expect the bikini top...it's from the Life's a Beach cartridge. I used my gypsy to hide contour the bikini bottom and parts of the straps, along with the facial features, as I didn't want them cut out. (Click on the pictures to view them larger.)
I've just started using chalk to add shading and dimension to my die cuts. Here's a picture of a mermaid with chalk...and one without the chalk.