Have you considered trying to make some art instead of asking this question on a message board full of STEM folks?
Also, "art" is such a broad term that it's hard to even know what you're asking. This would be like someone saying "How do I get into athletics?" Well, what kind of athletics? There are hundreds of ways to be athletic. And the answer would be similar: pick a sport/activity and try it.
Also, "art" is such a broad term that it's hard to even know what you're asking. This would be like someone saying "How do I get into athletics?" Well, what kind of athletics? There are hundreds of ways to be athletic. And the answer would be similar: pick a sport/activity and try it.