In order to draw with alcohol ink you do not need to be a professional artist, but you need the most elementary skills in drawing. In my opinion, the most important thing is understanding the composition and color combination. Well this is the most basic, you do not even need to be a professor in this, because you can always cut the paper in the form of the desired composition, and the colors are easily replaced, washed off and mixed. I looked through a lot of information before I started drawing with ink, and you need to practice to understand the principle. And here the motto "practice makes perfect" will help you. Practice and improve ;)