Yeah, that's the thing with knitting, you need to know what shape to make so that it will be the right 3D thing in the end... And how to make that shape
It's always very helpful when someone has created a pattern already, although going "blind" is a lot of fun. It's a lot of work, too, though, nearly every detail of Sam's outfit has to either be made twice because the first time didn't turn out (for small things) or partially unmade and remade (for big things).
Max on the other hand was done right from the first try, since it's basically a template made in white, with an extra-wide head and bunny bits (ears and tail).
Sometimes something seems simple but need to be remade several times before I get it right (like Sam's scarf) or something that might sound tricky end up right from the first try (like Sam's hat).
It's interesting. I'm sure if I was better at geometry and modeling and other 3D-related stuff I'd get a faster idea of what shape in need to make to get what I want, but I'm managing so far.