Overthinking is also a sh*** hinderance, not much better than being mindless. I can do both. First pondering all options and difficulties for a very long time and then dumping all thoughts away and making something inconsiderate 😅😅😅 But, after your last tutorial I am sure, you can tackle all problems you will encounter while sewing. The 'fabric-spoiling' is more on my experience level. Ok... while writing I notice... perhaps it is always possible to choose to tough patterns and ruin the fabric. Perhaps sewing is more a kind of character test than a nice hobby 😆😆😆😆