That is a great question.
Many builders put additional lighting in their models.
Buyers "fall in love" more easily in light bright homes.
In an existing home, a seller can create similar by increasing the wattage of their lights to the maximum allowed by the fixture, buying a lamp for dark areas, then when the property is being shown, turning on ALL lights, open blinds etc
Pricing agressively at value is extremely important.
Many lenders these days are requiring appraisers to use comps no older than 3 months.
In pricing your home, if you use sold comps no older than 2.5 months, and then price your home at value you will position yourself well for the buyer to make an offer on yours first.
Many sellers think they need to price at value + to leave room for negotiating.
Buyers are out there, and they have been and are buying.
But they are looking for the best deal they can get.
As a seller, if you price at value, you stand a better chance of the buyer choosing your home 1st to make that offer.
Of course the buyer will come in with an entry offer below your asking price, but when you counter, they will know it is a justified counter.
Typically they have seen tons of comparable properties priced at value +.
And It is much easier for them to justify, in their mind, taking your counter.
Best of luck in the sale of your home