It can be very helpful to know the style you want and what design elements you do or do not want to be included, below are examples:
↳ Should it be a solitaire, halo, three-stone, or side-stone design?
↳ Should it be an eternity, half-eternity, or non-eternity band?
↳ Do you prefer a traditional yellow gold, a more modern white gold, or a unique rose gold for metal?