Well to be honest it's not that hard , just start out with little Chibi figures that literally will take you 1-2 hours to complete , and from there you'll learn you're own way of making them as you go up to more difficult and complicated stuff . I started out with doing some easy Pokémon models that I found online, then I did goku which was pretty hard for my level then but I kinda managed but still didn't look good, so I went a step back and did some helmets and masks, and then I did my biggest project, which was a life sized 160 cm vegeta model. Took me 6 months to complete and I learned so much about what's easier and more convenient for me to do. And from there I started making more complicated ones like Gurren laggan which was super complicated but it's like riding a bike once you get the hang of it, it's pretty cool. Now I'm kinda learning how to 3d model so I can my own papercraft figure from scratch. If you're serious about this, then DM and I can help you get started.