Welcome to the board! Another thing to try is writing something like your name, a phrase poem etc. This will give you practice controlling the movement of the machine, and you already know the pattern. Look on youtube for different patterns. Most of the videos will talk you thru the motion. Try different designs. You will find some that are easier for you to do than others. Pick one of those easier ones to concentrate on. Make sure that you practice the design going L-r, R-L, bottom up and top down as you will usually need to fill in the space going in different directions.
As others mentioned, there's no quick result, you will just have to practice!