I'm just kind of winging it. I got the fabric for the obw background - but spent all weekend sewing another obw for my daughter -- so with hubby and the kids home for 3 days and me sewing instead of picking up behind everyone - my house is demolished. The plan is to finish cleaning up the house(if I can get away from my computer) then cut out the rest of his fabric. While I'm sewing those I'm hoping something clicks and I know how I want to do the bowtie. And, at some point I need to sit and draw it out on PAPER! (gasp) so I can get it all proportionate (you'd think with a symbol that had been around for 100 years or so there would be someone who had measured and come up with the destructions - or last time I sat and drew one I should have measured and saved my own hmm)
edit: duh -- print a picture and measure