Most designers do not know the difference between techniques, workmanship and styles of design. Zardozi and ari are techniques, not styles. They are classical. The most classical embroidery style is the mughal design hand-embroidery, brought by Akbar, from Central Asia. The recent fad has been to add crystal to embroidery.
Individual tastes dictate the intricacy and extravagance of the work.
In India there are no fashion trends. The only trend is seasonal - during summer, more organza, cotton and chiffon is used. In winter, we see more heavy silk, woolens, pashmina. There are two methods of embroidery and several different stitches. The two different methods are zardozi and ari.