First of all you need to make a sketch like this of that design which you want to do in hand embroidery work.
After make the design on the fabric for embroidery work.
You need some different kind of hand embroidery materials.
In this zardozi work design
we used 7 type of Hand Embroidery materials
Kasab thread (tilla)
Golden glass beads
Golden color crystals
France cut sequins
they also used some different kind of embroidrey stitches for making this embroidrey design, like zardozi stitch, Aari stitch, chain stitch, sequins stitch, beads stitch, and french knots stitch,