WHAT TO KEEP IN MIND "Don't go overboard!" Johnson warns. "It isn't practical to go through the day with different items dangling off of your nails, so apply crystals, beads, and embellishments to a couple of fingers instead of all five." Remember to layer on the clear top coat to anchor 3-D elements.
WHAT TO TRY Sephora Collection Nail Art Kit, $16; sephora.com.