I usually work at a few dolls at a time. I love to see how different they turn out even though make "the same thing" with them all.
So I make a few heads and then look at the wish list to find out which head would like to become which doll. Then I assemble one after the other, focusing on who they will become.
That is how I sometimes end up with three dolls all almost finished, all just in undies, waiting for clothes and names. Here they are, all big, tan dolls, two wish list and one special one.
I always work on at least one none wish list doll on the side where I can just try out what I would like to (a new eye shape here), just for myself ;)