Here are some close-up pics of individual details I've used in my custom cats.
Princess Leia's hair buns
Superman's chest logo
Julia's ice skate was made by modifying a simple baby bootie pattern. The blade was made by bending a paper clip and single crocheting over it to cover the metal.
Ballerina's tutu frill.
Bride and Groom details. Bride's veil was made using picot stitch and skirt was made using scallop stitch, just to add different textures to the cat. Bowtie for the groom with red fabric rose, shirt cuffs and placket with buttons.