There are two articles, both are good: https://www.backyardchickens.com/articles/guide-to-assisted-hatching-for-all-poultry.72886/I think I saw one there was one about a serama.. this egg is particularly small and huge air cell so I’ll look for that article again..thanks!
She uses a screw to make the little hole.
and https://www.backyardchickens.com/articles/step-by-step-guide-to-assisted-hatching.64660/