For me, I find it is best if there is an element of surprise, as to where my piece is going to end up. Otherwise, I feel restricted. I like the idea that something may take on a completely different direction than I initially thought it would, but still has the same underlying theme or message that I began with. If I don’t work this way, it stops being fun.
With creativity, being spontaneous is liberating. It allows you the freedom to make mistakes; to try out new things; to work more intuitively versus cognitively. It shuts down all thoughts that your final piece has to be a masterpiece. Some of my best disasters have in fact turned out to be my best learning experiences, and resulted in more exciting art. The secret is - pretend that your intent all along was to create the mistake, I mean masterpiece.
As stated by Bob Ross “We don’t make mistakes, just happy little accidents”. So get out there, and create The Mistake that becomes the masterpiece. If you need inspiration, check out some social media groups such as Finish the Scribble (@3yroldscribble) and Sketch Dailies.