It doesn't matter because "The best laid plan of mice and men often go awry"
You can plan all you want but you can't control it all. Some stuff is gonna happen. To paraphrase John Lennon "Life is what happens while you make other plans". At some point ou have to just do it. So no matter the project, plan it, get the material and get started. Be fluid enough in your progress to work through or around obstacles. If you hit a snag that halts progress then seek help. Come here and ask or E-mail at email@example.com and I'll help you get back on track. If I don't know the answer I know where to find it.