Alasdair and I world build nearly every day. He writes his world into a lined A4 hardovered exercise book. I use a huge visual diary. We follow, to our best ability, the wonderful questions posted here
The word consistency is the key. Build your world consistently - each day add something, think of something, note it down. This is not a task to tackle in an ad hoc fashion, for me, at least. I'm finding that because I'm doing a little each day, I'm seeing the world more and more clearly.
The Girl-child has agreed to draw my characters.
The Accountant has kind of agreed to draw my map.
We'll see where all this gets us.
In the meantime it is definitely a pool day.