DIY nail stickers need polish, scissors + scotch tape. Apply polish to your tape. Let it dry (I allowed 30 minutes just to be safe). into shapes Place shapes on nails and seal with top coat - Great idea!
Paint nail various colours (or search ombre nails). Apply nail striping tape (or cut reg. tape into stripes) in a design you like. Paint whole nail with black nail polish. Peel tape when just about dry (slowly).