I know that I have some talent for that, but I know that they must present themselves from A way that looks very professional, and I only know how to do it is on paper and pencil, once I tried to use a specialized drawing program but it did not give me, what if used is autocad, because I saw it at the university, I have seen the threads where they put art and it really is impressive.
You don't need to be a professional dancer to dance at pubs since focusing on having a great time is what matters the most. Similarly, you don't need to be a professional artist to take part in these entertaining contests.
You just need to draw to your heart's content and have fun while doing it which is what I usually do since I am not a professional artist myself and won a prize in one of their contests.