One final tip: use only skin-safe, well prepared henna intended for body art. Avoid so-called black henna, which may contain para-phenylenediamine (PPD), a chemical that can cause serious skin reactions.
For Navratri, the best design is the one that works with your outfit, the time you have and the amount of detail you enjoy wearing. A few well-chosen motifs can be just as striking as a full-hand pattern.
(All images are representational)