Where To Look
There are many places to look for ideas as to how you want your new home to look and what you want it to include.
Plan books in the homes magazines are full of ideas.
You can also spend some time "in the field" looking at existing homes in your area. Not only can you visit new home sites, but also visit open houses for used homes that are on the market.
Many cities have annual tours of "designer" homes where you can get a wealth of ideas.