Do not be afraid to get your hands dirty
Once you learn more about painting, you will realize that it’s way harder to learn than drawing. The reason for this is, that there is so much more to do, so much to work with and all the paint will sooner or later get stuck on you, your dress and your skin and even in your hair. It’s no wonder that many painters wear uniforms or nurse or doctors’ jacket /overcoat to protect their dresses. But once you get used to working with paint, particularly oil paint which is way harder to actually wash off, you will realize, that you should rather not concentrate much on avoiding dirt but instead concentrate on your own art work.
Rather have some used clothes which you can wear while painting. This way paint will not upset you and you can still chance and get a shower after each painting session.