Don't let the charts and tables and other stuff buffalo you. They are important to the DIY dilettante who want every thing just precisely _so_. But for the casual DIY you want to follow his measurements anyway, cause they are just simply the the best measurements of the average DIY hanger. So the charts and graphs and all the rest of it is disposable for your purposes.
If you can run a power thread injector you can do this. If not... then watch my We Don't Sew... We Make gear vids and get the basics under your belt. It's all there. You can do it.