Seed lawn installation - best practices prior to planting

I have roto-tilled and flattened my back yard, what are some of the further things I should be doing to ensure my seed lawn looks perfect for open house? What are some tips before I lay the seed for an enduring, quality lawn that will look it's best? I don't mind spending the extra capital to ensure this seed-lawn looks it's best, so long as that extra effort helps to make the sale!