i use Vector all the time .. Adobe Photoshop is Raters where everything is pixilated.. Adobe Illustrator is all vector. shapes... i have experience from both..
however Ever since Serif Created Affinity Design .. i gave it a whirl... loved it, bough it.. the interface is not so cluttered, and is much more easy to navigate. and once you figure out how to work with the tools. it is easy as pinkie apple pie.. I'm Loving it. here is a visual of interface and my Character Digitally created in this program..
the tools i use
pen tool,
node tool
circle snap tool
break curve.
i overlap my lines like crazy
once lines done
go to stoke
use pressure tool
alter the width of each line to the way i like it..
once done go to layers expand my stokes..
edit my work..
well its a step by step process difficult to explain
i plan to make a visual guide. granted it would be handy for Affinity Design users.. not so helpful of Adobe Illustrator...
however Serif does provide a free trial where people can give it a try. the best part about Serif they combined both vector and raster. plus they do not make you rent their software..
i like when you go to help button on top click on help. and a pop up box shows up. explains how to use the tools. you can go to the box and type pen tool and it will explain to you how it works.
hope i was able to help you out..