This is kind of standard advice to artists: "Don’t be afraid to make mistakes." Or, as Bob Ross says, "We don't make mistakes, we have happy accidents." Here, this advice is even more pertinent, because you have the enormous benefit of being able to back up arbitrary points as often as you want, without a tricky, tedious, and time-consuming process of erasure and alteration. I also like to think of it as, "You can always ctrl-z the shit out of this mess." For some people, this is the greatest way to learn.
Play! Even if you have a destination in mind, you don’t have to get there by a direct route; when you meander, the journey becomes the destination. This tends to be a highly forgiving artform, and you don't really need to have a technical agenda or even a clear idea of what you're trying to do at any given point; in fact, taking time to wander and just go in any direction that feels good, even if it seems like you’re just fooling around, can lead to breakthroughs in your process as you become aware of patterns, make connections, and develop new intuitions about how things work and what you can do. Like any good artist, you can freely iterate on your work, continually making adjustments and improvements in an ongoing and dynamic process of creation.