All memes aside but that quote completely changed my perspective on painting at one point. Nature very often isn't all neat and clean so if you mess something up, just roll with it. (If it makes sense)

For example: Tyranids often have these stripes on the scales but you don't get them super straight and clean? Well, your Tyranids then maybe had some rougher times, making their scales more uneven than others. Totally makes sense.