The thing about perfectionism, or wanting things to be perfect, is that it comes from equating the value of creation with perfection. This is a fundamental idea we’ve inherited from the Greeks. In Ancient Greece, Technè expressed the technique for doing something. While praxis represented the act of doing something, and poiesis the act of making. And while art forms such as poetry and music were connected with poiesis, it also meant, more broadly, the process of bringing something from non-being to being. Which is why, in Plato’s book, The Symposium, Love (the topic in discussion) is understood as a type of poiesis. More specifically, when Love expresses itself within beauty, being beauty an expression of the divine (and hence the perfect), it is an act of creation that allows us, mortals to become immortals. From this is easy to see how art creation, as an expression of this love for beauty is evaluated in terms of perfection.
But the thing is, that’s not the only definition of art. If we think about art as an essential form of communication, its value doesn’t lie in perfection, lies in the ability to communicate our reality (something close to Aristotle conception of mimesis - art as a representation of our shared reality). This leaves much room for imperfections, because communication, being a product of humans is always imperfect as our reality also is.