I publish my paper doll books via Lulu.com. There are a few post from way back in 2012 that walk you through the process I use (starting here, then here) and, although Lulu has changed some, the process is pretty much the same.
Since I haven't created the dolls or clothing yet, I think the best place to begin is at the beginning.
Each doll is now placed on its own layer above the template layers (now in a group). I set the doll sketch layers to Multiply so that I can see the template layer. These dolls are a little bit smaller than I usually draw, mainly because I wanted to fit three of them instead of the one doll I usually make. This is just a rough placement. Next, I want to add the base to each doll.
So that's the basic layout. It's tedious but necessary. Next week, the drawing fun begins!
Til then, here's a picture of my little art buddy :)