Over the past three weeks I have applied more than 1350 individual rhinestones to my competition dresses. If you are not careful with lighting you could blind yourself from the glare of the shine.
Each rhinestone must be hand placed and secured with a tiny daub of special glue developed for this purpose. This is a slow process that requires careful attention and a steady heady hand. Once you commit a stone to the fabric with glue there is no going back. Wiping up excess or misplaced glue is not really possible; the fabric is permanently marked, changed.
Knowing what you want as a final look, a final result is of absolute importance. Planning ahead of time for a design pays off, as does some practice. Wise practices for anything thing in life you really want to do well.