Practice study on acrylic

In my previous post I said that I wanted to experiment and learn more how to use acrylic. Today I tried it for the second time using the same subject, calla lily. Instead on a canvas, I used watercolor paper. However, later when I was working, I regretted not using my new acrylic paper. Also the paints I used were of less quality. I told myself thereafter that If I want to learn, then I must use the right material for specific medium. So far my experience with acrylic showed that it dries fast, so I also have to work quickly. I know that this work is not professionally done but just a result of an exercise to learn.