What makes each medium unique in creating artwork, and how does it limit or expand what an artist is able to do with it?

Each medium is unique in it's own way because of how each one is used and how they work. It can be limiting at times, just like how watercolor is hard to make precise lines with. Or how acrylic paint isn't easy to fix if you make a mistake. But on the other hand, different types of mediums can also expand what you can do with your art. Such as acrylic paint can be used to create layers, and pen can be used to create fine lines.

True! true !

Blue it is beautiful