Pat, your nocks look great, no need for me to post more blurry pics.
The way i often make self nocks is after figuring which end and which way the nock is going to go, i.e. I do mine against the grain with the grain running out on the top of the business end of the arrow, towards the point. I use the old school way Saxton Pope writes about, three hack saw blades taped together, maybe two if I feel like sanding. Three blades after sanding makes a loose fit, two needs more sanding for a more snug fit. Follow what Pat said about shaping the bottom of the nock. Don't forget to wrap, sinew, the best, denim thread, regular thead, imitation sinew, pert much anything, then seal with super glue, I use Duco cement, dosen't make my fingers so stuck together, cures slower, though. Sometimes clear fingernail polish, a bottle lasts a long time. You're on your way, man!!