Is this how everyone builds a jigsaw?
1. Have possession of all the component parts, including a reference image of finished picture
2. Isolate all the edges
3. Build the frame
4. Gradually piece the thing together
Aside from chunky wooden jigsaws and those with under 24 pieces, I don't know of any other process to use (for grown up jigsaws).
However, Jackson recently suggested a new one to me during the stage 2 edge sort. After chatting and half heartedly helping for the best part of 10 minutes he asked, 'Wouldn't it just be easier to just put it together?'