Line-up clippers can be used by both professionals and amateurs, depending on your experience and comfort level.
However, it is important to note that lineup haircuts require precision and attention to detail, so it may take some practice to achieve the desired results.
If you are new to line-up haircuts, it may help to seek guidance from a professional barber or stylist who can show you the proper techniques and provide feedback on your work.
With practice, you might be able to master line-up haircuts on your own using high-quality lineup clippers.