Building profiles…
When I was under the editorial direction of Cornerstones at the beginning of The Stumpwork Robe’s life, I read a small power-packed book called How To Write A Blockbuster, by Helen Corner and Lee Weatherly. One of the very helpful details in the book was a little sheet: effectively a character profile sheet. I scanned off a number for the book I was writing at the time and spent profitable hours filling in the detail.