Describe the home you would like to design for yourself.
When I was a teenager I thought I would have liked to have been an architect. I found some graph-paper and drew a lot of home designs. I even made some models out of cardboard. I don't have those anymore, but I still love looking at blueprints and drawings.
I don't need a big home. But the must have items would be a modern kitchen and bathrooms. A friend has a Japanese style bathroom with the faucet for the overflow bathtub in the ceiling.
But I think the most import thing would be windows. I would love a home that has a lot of windows, maybe even floor to ceiling windows. The reason, I love having houseplants. Here is a picture of one of the bay-windows in my home now:
Close to where I work in downtown Dallas there is a new exhibit hall called The Nasher Sclupture Center. The building is amazing. The ceiling is beautiful, the architect shaded the glass roof/ceiling with elegant aluminum honeycombs. The openings are angled due north so there is no direct sunlight.
Of course my home would have to have all of these. Is that too much to ask?