This shows how to use the template book folding patterns - much easier than the measure and mark method. You can find a huge choice of patterns in my shops Looks Inviting - www.looksinvit... Etsy - www.etsy.com/s...
@@TakeraiHinjima Whenever possible yes. However if the position of the fold does not allow you to line up your fold with the ruler, then fold over as far as your can and turn up any excess which goes past the spine of the book. Each pattern comes with instructions which explain this with images.