“Art is never defect-free. Things that are remarkable never meet spec, because that would make them standardized, not worth talking about.”
To find the mysterious flow in creating art, create without the end in mind. Without a goal. Choose where to draw a line and then where to draw the next. You don't have to know where the third line will be while drawing the second. When I start out trying to figure out what the entire "thing" will be when finished, I get frustrated and distracted. If I work freely, watch how how paint and pen move, how colors intertwine, how layers build... the art is more "me" and time passes in an instant.