“From Little Acorns Do Mighty Oaks Grow” goes the English proverb. This may be a helpful mindset to adopt when you’re making art as an adult. Instead of judging every little mistake, mark or piece of work as not being good enough, see each thing you make as a tiny seed. It takes a lot of time and water to become fully grown and its impossible to transform into a tree overnight (unless you have magic beans and live in a fairytale).
Robert Louis Stevenson advises “Don’t judge each day by the harvest you reap but by the seeds that you plant.” Your art doesn’t need a harsh judgmental critic. It needs a kind and positive cheerleader to give encouragement and support so that you’ll continue making art. An acorn is no less important or valuable than a tree even though it is smaller in size. In the same way your beginner art is just a different stage to the art you’ll make years from now. Both have their merits and show creativity. But if you’re enjoying the process then that’s all that really matters.