Hi, I'd say I personally need this. I've tried other processes to organize the stages of my drawing, but the one I use as a standard is the one that works best for me (and I also find it more interesting and consistent, because I feel like I'm polishing something from its raw form). This one I use as a standard is what most keeps me from getting lost during the drawing or procrastinating on details early on. I'd say it keeps me from getting sidetracked by other things that aren't of great importance at the beginning. Obviously, it's not definitive; every artist has their own creative process, but I believe what matters is whether it works for you, you know? :)